The Cosmetic Products (Safety) Regulations 2004

Regulations 5(2), 6(1) and 7(2), 7(9)

SCHEDULE 4 LIST OF SUBSTANCES WHICH COSMETIC PRODUCTS MUST NOT CONTAIN EXCEPT SUBJECT TO RESTRICTIONS

In this Schedule, the matters specified in columns 3, 4, 5 and 6 which apply to a particular substance are those set out to the right of its name as mentioned in column 2; and the matters specified in columns 4, 5 and 6 which apply in any particular case are those set out to the right of the matter specified in column 3 which applies in that case. The substance may not be used except for the purposes or contained other than in the types of product specified in column 3. The concentration of the substance in a product may not exceed the limit specified in column 4: where the names of two or more substances are mentioned in a single item as set out in column 2 and a product contains more than one of those substances, the limit specified in column 4 is the limit for all of those substances taken together; and where a product is intended to be mixed with another product in specified proportions before use, the level of concentration shall be calculated by reference to the mixture. Other requirements are specified in column 5. In column 4 of this Schedule, the percentage concentration is measured by reference to mass (m/m) unless a contrary intention appears.

Names which appear in square brackets in column 2 are the International Nomenclature Cosmetic Ingredient names of the substances in question given in the inventory of ingredients employed in cosmetic products drawn up in accordance with the provisions of the Directive and contained in Commission Decision 96/335/EC(1).

Regulation 1(3) provides that until 24th March 2005 entries 14, 60, 61 and 62 shall be inserted into Part 1 of this Schedule as they appear in Part 1 of Schedule 4 to the Cosmetic (Products) (Safety) Regulations 2003(2). From 24th March 2005 the above entries shall have effect as they appear in Part 1 of this Schedule.

Regulation 1(4) provides that entries 93,94 and 95 in Part 1 of this Schedule shall not form part of this Schedule until 24th March 2005.

PART 1 SUBSTANCES LISTED IN ANNEX III, PART I OF THE DIRECTIVE AS SUBSTANCES WHICH COSMETIC PRODUCTS MUST NOT CONTAIN EXCEPT SUBJECT TO THE RESTRICTIONS LAID DOWN

(1)	(2)	(3)	(4)	(5)	(6)
Reference Number	Name of substance	Purpose of substance or type of product	Maximum concentration of substance in product	Other requirements	Required information
1a	Boric acid, borates, and tetraborates‘	Talcum power	5 per cent	Not to be used in products intended for children under three years old Not to be used in products intended for peeling or irritated skin if the concentration of free soluble borate exceeds 1.5 per cent calculated as boric acid	Not to be used for bathing children under three years old Do not use on peeling or irritated skin (Only required if the concentration of free soluble borate exceeds 1.5 per cent calculated as boric acid)
		Oral hygiene products	0.1 per cent	Not to be used in products intended for children under three years old	Do not swallow Not to be used for children under three years old
		Other products (excluding bath products and hair waving products	3 per cent	Not to be used in products intended for children under three years old Not to be used in products intended for peeling or irritated skin if the concentration of free soluble borate exceeds 1.5 per cent calculated as boric acid	Not to be used for children under three years old Do not use on peeling or irritated skin (Only required if the concentration of free soluble borate exceeds 1.5 per cent calculated as boric acid)
			The above-mentioned percentages are calculated as boric acid
1b	Tetraborates	Bath products	18 per cent	Not to be used in products for children under three years old	Not to be used for bathing children under three years old
2a	Thioglycolic acid and its salts	(a) Hair waving or straightening products for general use	8 per cent	pH 7 to 9.5	Contains thioglycolate. Follow the instructions. Keep out of reach of children.
		(b) Hair waving or straightening products for professional use	11 per cent ready for use	pH 7 to 9.5	Contains thioglycolate. Follow the instructions. Keep out of reach of children. For professional use only
		(c) Depilatories	5 per cent ready for use	pH 7 to 12.7	Contains thioglycolate. Follow the instructions. Keep out of reach of children
		(d) Other hair-care products which are removed after application	2 per cent ready for use	pH 7 to 9.5	Contains thioglycolate. Follow the instructions. Keep out of reach of children
			The above-mentioned percentages are calculated as thioglycolic acid	(a), (b), (c) and (d): The directions for use must incorporate the following: Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves ((a), (b) and (d) only)
2b	Thioglycolic acid esters	(a) Hair waving or straightening products for general use	8 per cent ready for use	pH 6 to 9.5	Contains thioglycolate. Follow the instructions. Keep out of reach of children
		(b) Hair waving or straightening products for professional use	11 per cent ready for use	pH 7 to 9.5	Contains thioglycolate. Follow the instructions. Keep out of reach of children. For professional use only
			The above-mentioned percentages are calculated as thioglycolic acid	(a) and (b): The directions for use must incorporate the following: May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves
3	Oxalic acid, its esters and alkaline salts	Hair-care products	5 per cent	-	For professional use only
4	Ammonia	All purposes and products	6 per cent calculated as NH3	-	Contains ammonia (not required when concentration is not more than 2 per cent)
5	Tosylchloramide sodium (INN) [Chloramine-T]	All purposes and products	0.2 per cent	-	-
6	Chlorates of alkali metals	Toothpaste	5 per cent	-	-
		Other uses	3 per cent	-	-
7	Dichloromethane	All purposes and products	35 per cent (and when mixed with 1,1,1-trichloroethane, total concentration must not exceed 35 per cent)	Purity of the dichloromethane must be not less than 99.8 per cent	-
8	m- and p-Phenylenedi-amines, their N-substituted derivatives and their salts; N-substituted derivatives of o-phenylenediamines (see Note 1), with the exception of those derivatives listed elsewhere in this Schedule)	Oxidizing colouring agents for hair dyeing for general use	6 per cent calculated as a free base, subject to the provisions of “Combination Rule A” set out below	-	Contains phenylenediamines Can cause an allergic reaction. Do not use to dye eyelashes or eyebrows
		Oxidizing colouring agents for hair dyeing for professional use	10 per cent calculated as a free base, subject to the provisions of “Combination Rule A” set out below	-	Contains phenylenediamines. For professional use only. Can cause an allergic reaction. Wear suitable gloves
9	Methylphenylenedimines (other than 4-methyl-m-phenylenediamine and its salts), their N-substituted derivatives and their salts (Toluenediamines (other than toluene-1,3-diamine and its salts), their N-substituted derivatives and their salts) (see Note 1)	Oxidizing colouring agents for hair dyeing for general use	10 per cent calculated as a free base, subject to the provisions of “Combination Rule A” set out below	-	Contains phenylene-diamines. Can cause an allergic reaction. Do not use to dye eyelashes or eyebrows
		Oxidizing colouring agents for hair dyeing for professional use	10 per cent calculated as a free base, subject to the provisions of “Combination Rule A” set out below	-	Contains phenylenediamines. For professional use only. Can cause an allergic reaction. Wear suitable gloves
10	Diaminophenols (see Note 1)	Oxidizing colouring agents for hair dyeing for general use	10 per cent calculated as free base, subject to the provisions of “Combination Rule A” set out below	-	Contains diaminophenols. Can cause allergic reaction. Do not use to dye eyelashes or eyebrows
		Oxidizing colouring agents for hair dyeing for professional use	10 per cent calculated as a free base, subject to the provisions of “Combination Rule A” set out below	-	Contains diaminophenols. For professional use only. Can cause allergic reaction. Wear suitable gloves
11	Dichlorophen (INN) [Dichlorophene]	All purposes and products	0.5 per cent	-	Contains dichlorophen
12	Hydrogen peroxide and other compounds or mixtures that release hydrogen peroxide including hydrogen peroxide-urea (hydrogen peroxide-carbamide) and zinc peroxide	(a) Hair-care preparations	12 per cent of H2O2 present or released	-	(a): Wear suitable gloves Contains hydrogen peroxide. Avoid contact with eyes. Rinse eyes immediately if product comes into contact with them
		(b) Skin-care preparations	4 per cent of H2O2 present or released	-	Contains hydrogen peroxide. Avoid contact with eyes. Rinse eyes immediately if product comes into contact with them
		(c) Nail hardening preparations	2 per cent of H2O2 present or released	-	Contains hydrogen peroxide. Avoid contact with eyes. Rinse eyes immediately if product comes into contact with them
		(d) Oral hygiene products	0.1 per cent of H2O2 present or released	-	-
13	Formaldehyde (see also Part I of Schedule 6)	Nail hardeners	5 per cent	-	Contains formaldehyde. Protect cuticles with grease or oil. (Not required when concentration is not more than 0.05 per cent)
14	Hydroquinone	Oxidizing colouring agent for hair dyeing for general use	0.3 per cent subject to the provisions of “Combination Rule B” set out below	-	Contains hydroquinone. Do not use to dye eyelashes or eyebrows. Rinse eyes immediately if product comes into contact with them
		Oxidizing colouring agent for hair dyeing for professional use	0.3 per cent subject to the provisions of “Combination Rule B” set out below	-	For professional use only. Contains hydroquinone. Rinse eyes immediately if product comes into contact with them
		Artificial nail systems for professional use	0.02 per cent (after mixing for use) subject to the provisions of “Combination Rule B” set out below	-	For professional use only Avoid skin contact Read directions for use carefully
15a	Potassium hydroxide and sodium hydroxide	Nail cuticle solvent	5 per cent calculated as sodium hydroxide (see Note 2)	-	Contains alkali. Avoid contact with eyes. Can cause blindness. Keep out of reach of children
		Hair straightener for general use	2 per cent calculated as sodium hydroxide (see Note 2)	-	Contain alkali. Avoid contact with eyes. Can cause blindness. Keep out of reach of children
		Hair straightener for professional use	4.5 per cent calculated as sodium hydroxide (see Note 2)(3)	-	For professional use only. Avoid contact with eyes. Can cause blindness
		pH adjuster for depilatories		PH value not to exceed 12.7	Keep out of reach of children Avoid contact with the eyes
		Other uses as pH adjuster		PH value not to exceed 11	-
15b	Lithium hydroxide	Hair straightener for general use	2 per cent calculated as sodium hydroxide (see Note 2)	-	Contains alkali. Avoid contact with eyes. Can cause blindness. Keep out of reach of children
		Hair straightener for professional use	4.5 per cent calculated as sodium hydroxide (see Note 2)	-	For professional use only. Avoid contact with eyes. Can cause blindness
		pH adjuster for depilatories		PH value not to exceed 12.7	Contains alkali. Keep out of reach of children. Avoid contact with eyes
		Other uses as pH adjuster (for rinse-off products only)		PH value not to exceed 11	-
15c	Calcium hydroxide	Hair straighteners containing two components; calcium hydroxide and a guanidine salt	7 per cent by weight of calcium hydroxide	-	Contains alkali. Avoid contact with eyes. Keep out of reach of children. Can cause blindness
		pH adjuster for depilatories		pH value not to exceed 12.7	Contains alkali. Avoid contact with eyes. Keep out of reach of children.
		Other uses e.g. pH adjuster processing aid		pH value not to exceed 11
16	α-Naphthol [1-Naphthol] and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction
17	Sodium nitrite	Rust inhibitor	0.2 per cent	Do not use with secondary and/or tertiary amines or other substances forming nitrosamines	-
18	Nitromethane	Rust inhibitor	0.3 per cent	-	-
19	Phenol and its alkali salts	Soaps and shampoos	1 per cent calculated as phenol	-	Contains phenol
20	ENTRY DELETED
21	Quinine and its salts	Shampoos	0.2 per cent calculated as quinine base	-	-
		Hair lotions	0.5 per cent calculated as quinine base	-	-
22	Resorcinol	Oxidizing colouring agent for hair dyeing for general use	5 per cent subject to the provisions of “Combination Rule B” set out below	-	Contains resorcinol. Rinse hair well after application. Do not use to dye eyelashes or eyebrows. Rinse eyes immediately if product comes into contact with them
		Oxidizing colouring agent for hair dyeing for professional use	5 per cent subject to the provisions of “Combination Rule B” set out below	-	Contain resorcinol. For professional use only. Rinse eyes immediately if product comes into contact with them
		Hair lotions and shampoos	0.5 per cent subject to the provisions of “Combination Rule B” set out below	-	Contains resorcinol
23a	Alkali sulphides	Depilatories	2 per cent calculated as sulphur	PH value not to exceed 12.7	Keep out of reach of children. Avoid contact with eyes
23b	Alkaline earth sulphides	Depilatories	6 per cent calculated as sulphur	PH value not to exceed 12.7	Keep out of reach of children. Avoid contact with eyes
24	Water-soluble zinc salts with the exception of zinc 4-hydroxybenzene-sulphonate	All purposes and products	1 per cent calculated as zinc	-	-
25	Zinc 4-hydroxybenzene-sulphonate [Zinc phenolsulfonate]	Deodorants, antiperspirants and astringent lotions	6 per cent calculated as percentage of anhydrous substance	-	Avoid contact with eyes
26	Ammonium monofluoro-phosphate	Oral hygiene products	0.15 per cent calculated as fluorine. When mixed with other fluorine compounds the total fluorine concentration must not exceed 0.15 per cent	-	Contains ammonium monofluorophosphate
27	Sodium monofluoro-phosphate	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains sodium monofluoro-phosphate
28	Potassium monofluoro-phosphate	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains potassium monofluorophosphate
29	Calcium monofluoro-phosphate	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains calcium monofluorophosphate
30	Calcium fluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains calcium fluoride
31	Sodium fluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains sodium fluoride
32	Potassium fluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains potassium fluoride
33	Ammonium fluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains ammonium fluoride
34	Aluminium fluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains aluminium fluoride
35	Stannous fluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains stannous fluoride
36	Hexadecylammonium fluoride [Cetylamine hydrofluoride]	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains hexadecylammonium fluoride
37	3-(n-Hexadecyl-N-2-hydroxyethylammonio)-propylbis(2-hydroxy-ethyl)ammonium difluoride [Stearyl trihydroxyethyl propylenediamine dihydrofluoride]	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains 3-(n-hexadecyl-N-2-hydroxyethylammonio)- propylbis(2-hydroxyethyl)-ammonium difluoride
38	N,N’,N’—Tris(polyoxyethylene)-N-hexadecylpropylene-diamine dihydrofluoride [Palmityltrihydroxyethyl propylenediamine dihydrofluoride]	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains N,N’,N’-tris (polyoxyethylene)-N-hexadecylpropylenediamine dihydrofluoride
39	Octadecenylammonium fluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains octadecenylammonium fluoride
40	Sodium fluorosilicate	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains sodium fluorosilicate
41	Potassium fluorosilicate	Oral hygiene products	As for ammonium monofluorophosphate	-	Contain potassium fluorosilicate
42	Ammonium fluorosilicate	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains ammonium fluorosilicate
43	Magnesium fluorosilicate	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains magnesium fluorosilicate
44	1,3-Bis(hydroxymethyl)-imidazolidene-2-thione [Dimethylol ethylene thiourea]	Hair care preparations	2 per cent	Not to be used in aerosol dispensers	Contains 1,3-bis(hydroxymethyl) imidazolidine-2-thione
45	Benzyl alcohol (See also Part I of Schedule 6)	Solvent, perfumes and flavourings		-	-
46	6-Methylcoumarin	0.003 per cent	0.003 per cent	-	-
47	Nicomethanol hydrofluoride	Oral hygiene products	As for ammonium monofluorophosphate	-	Contains nicomethanol hydrofluoride
48	Silver nitrate	Products to dye eyelashes or eyebrows	4 per cent	-	Contains silver nitrate. Rinse eyes immediately if product comes into contact with them
49	Selenium disulphide [Selenium sulphide]	Anti-dandruff shampoos	1 per cent	-	Contains selenium disulphide. Avoid contact with eyes or damaged skin
50	Aluminium zirconium chloride hydroxide complexes AlxZr(OH)y Clz and aluminium hydroxide glycine complexes	Anti-perspirants	20 per cent anhydrous aluminium zirconium chloride hydroxide, 5.4 per cent as zirconium	The ratio of the number of aluminium atoms to that of zirconium atoms must be between 2 to 10 The ratio of the number of (Al + Zr) atoms to chlorine atoms must be between 0.9 and 2.1 Not to be used in aerosol dispensers (sprays)	Do not apply to irritated or damaged skin
51	Quinolin-8-ol and bis(8-hydroxyquinolinium sulphate) (See also Part I of Schedule 3) [Oxyquinoline and Oxyquinoline sulphate]	Stabilizer for hydrogen peroxide in rinse-off hair care preparations	0.3 per cent calculated as base	-	-
		Stabilizer for hydrogen peroxide in non rinse-off hair car preparations	0.3 per cent calculated as base	-	-
52	Methanol	Denaturant for ethanol and isopropyl alcohol	5 per cent calculated as a percentage of ethanol and isopropyl alcohol	-	-
53	Etidronic acid and its salts	Hair care	1.5 per cent expressed as etidronic acid	-	-
54	1-Phenoxy-propan-2-ol (See also Part I of Schedule 6) [Phenoxyisopropanol]	Products rinsed off after use	2 per cent	Prohibited in oral hygiene products	-
55	Lead acetate	Only for hair dyeing	0.6 per cent calculated as lead	-	Contains lead acetate. Keep away from children. Avoid all contact with the eyes. Wash hands after use. Do not use to dye eyelashes, eyebrows or moustaches. If irritation develops discontinue use
56	Magnesium fluoride	Dental hygiene products	0.15 per cent calculated as fluoride. When mixed with other fluorine compounds the total fluorine concentration must not exceed 0.15 per cent	-	Contains magnesium fluoride
57	Strontium chloride hexahydrate	(a) Toothpaste	3.5 per cent calculated as strontium. When mixed with other permitted strontium compounds the total strontium content must not exceed 3.5 per cent	-	Contains strontium chloride Frequent use by children is not advisable
		(b) Shampoo and face care products	2.1 per cent calculated as strontium. When mixed with other permitted strontium compounds the total strontium content must not exceed 2.1 per cent	-	-
58	Strontium acetate hemihydrate	Toothpaste	3.5 per cent calculated as strontium. When mixed with other permitted strontium products the total strontium content must not exceed 3.5 per cent	-	Contains strontium acetate. Use by children is not advisable
59	Talc: hydrated magnesium	(a) Powdery products intended to be used for children under three years of age	-	-	(a): Keep powder away from children’s and mouth
		(b) other products	-	-	-
60	Fatty acid dialkylamides and dialkanolamides	All purposes and products	Maximum secondary amine content: 0.5 per cent	Do not use with nitrosating systems. Maximum secondary amine content: 5 per cent (applies to raw materials. Maximum nitrosamine content: 50 μg/kg (applies to raw materials). Keep in nitrite-free containers	-
61	Monoalkylamines, Monoalkanolamines and their salts	All purposes and products	Maximum secondary amine content: 0.5 per cent	Do not use with nitrosating systems. Minimum purity: 99 per cent. Maximum secondary amine content: 0.5 per cent (applies to raw materials). Maximum nitrosamine content: 50 μg/kg (applies to raw materials). Keep in nitrite-free containers.	-
62	Trialkylamines, trialkanolamines and their salts	(a) non-rinse-off products	(a) 2.5 per cent	Do not use with nitrosating systems. Minimum purity: 99 per cent. Maximum secondary amine content: 0.5 per cent (applies to raw materials) Maximum nitrosamine content: 50 μg/kg (applies to raw materials). Keep in nitrite free containers	-
		(b) other products		Do not use with nitrosating systems. Minimum purity: 99 per cent. Maximum secondary amine content: 0.5 per cent (applies to raw materials) Maximum nitrosamine content: 50 μg/kg (applies to raw materials). Keep in nitrite free containers	-
63	Strontium hydroxide	pH-regulator in depilatory products	3.5 per cent calculated as strontium	pH value not to exceed 12.7	Keep out of reach of children. Avoid contact with the eyes
64	Sodium peroxide	Rinse-off hair care preparations for professional use	4.5 per cent calculated as strontium in the ready-for-use preparation	All products must meet the hydrogen peroxide release requirements	Avoid contact with eyes. Rinse eyes immediately if product comes into contact with them. For professional use only. Wear suitable gloves
65	Benzalkonium chloride (INN), bromide and saccharinate (eg. Cetalkonium chloride Stearalkonium chloride, Cetearalkonium bromide)	Hair care products rinsed off after use	3 per cent calculated as benzalkonium chloride	In the finished product the concentration of benzalkonium chloride, bromide and saccharinate with an alkyl chain-length of C14 or less must not exceed 0.1 per cent calculated as benzalkonium chloride	Avoid contact with the eyes
66	Polyacrylamides	Body-care leave-on products		Maximum residual acrylamide content 0.1 mg/kg Maximum residual acrylamide content 0.5 mg/kg	-
67	Amyl cinnamal (CAS No 122-40-7)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
68	Benzyl alcohol (CAS No 100-51-6)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
69	Cinnamyl alcohol (CAS No 104-54-1)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse off products	-
70	Citral (CAS No 5392-40-5)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse off products	-
71	Eugenol (CAS No 97-53-0)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
72	Hydroxycitronellal (CAS No 107-75-5)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
73	Isoeugenol (CAS No 97-54-1)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
74	Amylcinnamylalcohol (CAS No 101-85-9)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
75	Benzyl salicylate (CAS No 118-58-1)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
76	Cinnamal (CAS No 104-55-2)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
77	Coumarin (CAS No 91-64-5)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
78	Geraniol (CAS No 106-24-1)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
79	Hydroxymethylpentyl-cyclohexene-carboxaldehyde (CAS No 31906-04-4)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
80	Anisyl alcohol (CAS No 105-13-5)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
81	Benzyl cinnamate (CAS No 103-41-3)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
82	Farnesol (CAS No 4602-84-0)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
83	2-(4-tert-Butylbenzyl) propionaldehyde (CAS No 80-54-6)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
84	Linalool (CAS No 78-70-6)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
85	Benzyl benzoate (CAS No 120-51-4)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
86	Citronellol (CAS No 106-22-9)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
87	Hexyl cinnamaldehyde (CAS No 101-86-0)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
88	d-Limonene (CAS No 5989-27-5)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
89	Methyl heptin carbonate (CAS No 111-12-6)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
90	3-Methyl-4(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one (CAS No 127-51-5)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
91	Oak moss extract (CAS No 90028-68-5)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
92	Treemoss extract (CAS No 90028-67-4)			The presence of the substance must be indicated in the list of ingredients referred to in regulation 7(1) when its concentration exceeds: 0.001 per cent in leave-on products 0.01 per cent in rinse-off products	-
93	2,4-Diaminopyrimidine 3-oxide (CAS No 74638-76-9)	Hair care formulations	1.5 per cent	-	-
94	Benzoyl peroxide (CAS No 94-36-0)	Artificial nail systems for professional use	0.7 per cent (after mixing for use)	-	For professional use only Avoid skin contact Read directions for use carefully
95	Hydroquinone methyl ether (4-methoxyphenol) (CAS No 150-76-5)	Artificial nail systems for professional use	0.02 per cent (after mixing for use)	-	For professional use only Avoid skin contact Read directions for use carefully

PART 2 SUBSTANCES LISTED IN ANNEX III, PART 2 OF THE DIRECTIVE AS SUBSTANCES PROVISIONALLY ALLOWED

(1)	(2)	(3)	(4)	(5)	(6)	(7)
Reference Number	Name of substance	Purpose of substance or type of product	Maximum concentration of substance in product	Other requirements	Required information	Permitted for supply until
Combination Rules A. Where a cosmetic product contains two or more substances to which this Combination Rule applies, the concentration in the product of each of those substances shall be such that the sum of the relevant quotients for those substances (as defined in Rule C below) shall not exceed 1. B. Where a cosmetic product contains the substances to which this Combination Rule applies, the concentration in the product of each of those substances shall be such that the sum of the relevant quotients for those substances (as defined in Rule C below) shall not exceed 2; but the concentration of each substances shall not in any event exceed the limit specified for the substance in respect of the product in column 4 above. C. The relevant quotient for each substance is the actual concentration of the substance in the product divided by the maximum concentration specified for the substance in respect of the product in Column 4 of this Schedule.
Note 1: May be used singly or in combination provided that the sum of the ratios of the levels of each of them in the cosmetic product expressed with reference to the maximum level authorised for each of them does not exceed 1.
Note 2: The concentration of sodium, potassium or lithium hydroxide is expressed as a percentage of sodium hydroxide. In cases of mixtures, the sun must not exceed the limits given in column 4.
1	C.I. Basic Blue 7 (CAS No 2390-60-5)	Non-oxidising colouring agents for hair dyeing	0.2 per cent	—	Can cause allergic reaction	30.9.2004
2	2-Amino-3-nitrophenol (CAS No 603-85-0) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
		Non-oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
3	4-Amino-3-nitrophenol (CAS No 610-81-1) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
		Non-oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
4	Naphthalene-2,7-diol (CAS No 582-17-2) and its salts	Oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.5 per cent	—	30.9.2004
5	3-Aminophenol (CAS No 591-27-5) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
6	3,4-Dimethylpyridine-2,6-diol (CAS No 84540-47-6) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
7	4-(3-Hydroxypropyl)amino-3-nitrophenol (CAS No 92952-81-3) and its salts	Oxidising colouring agents for hair dyeing	5.2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 2.6 per cent	Can cause allergic reaction	30.9.2004
		Non-oxidising colouring agents for hair dyeing	2.6 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 2.6 per cent	Can cause allergic reaction	30.9.2004
8	6-Nitropyridine-2,5-diamine (CAS No 69825-83-8) and its salts	Non-oxidising colouring agent for hair dyeing	3 per cent	—	Can cause allergic reaction	30.9.2004
9	HC Blue No. 11 (CAS No 23920-15-2) and its salts	Oxidising colouring agent for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
		Non-oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
10	2-(2-Nitro-p-toluidino)-ethanol (CAS No 100418-33-5) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
		Non-oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
11	2-(2-Hydroxyethylamino)-4,6-dinitrophenol (CAS No 99610-72-7) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
		Non-oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
12	4-Methylaminophenol (CAS No 150-75-4) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
13	2-(2,4-Diamino-5-methylphenoxy)ethanol (CAS No 141614-05-3) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
14	HC Violet No. 2 (CAS No 104226-19-9) and its salts	Non-oxidising colouring agent for hair dyeing	2 per cent	—	—	30.9.2004
15	2-(2,6-Dinitro-p-anisidino)ethanol (CAS No 122252-11-3) and its salts	Non-oxidising colouring agent for hair dyeing	3 per cent	—	Can cause allergic reaction	30.9.2004
16	HC Blue No. 12 (CAS No 104516-93-0) and its salts	Oxidising colouring agents for hair dyeing	1.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.75 per cent	Can cause allergic reaction	30.9.2004
		Non-oxidising colouring agent for hair dyeing	1.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.75 per cent	Can cause allergic reaction	30.9.2004
17	4-Ethoxy-6-methyl-m-phenylenediamine (CAS No 113715-25-6) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
18	4,4’-(Trimethylenedioxy)di-m-phenylenediamine (CAS No 81892-72-0) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
19	3-Amino-2,4-dichlorophenol (CAS No 61693-43-4) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
20	3-Methyl-l-phenyl-5-pyrazolone (CAS No 89-25-8) and its salts	Oxidising colouring agents for hair dyeing	0.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	Can cause allergic reaction	30.9.2004
21	5-(2-Hydroxyethyl)amino- o-cresol (CAS No 55302-96-0) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
22	3,4 Dihydro-2H-1,4-benzoxazin-6-ol (CAS No 26021-57-8) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	Can cause allergic reaction	30.9.2004
23	Naphthalene-1,7-diol (CAS No 575-38-2) and its salts	Oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.5 per cent	Can cause allergic reaction	30.9.2004
24	HC Yellow No.10 (CAS No 109023-83-8) and its salts	Non-oxidising colouring agents for hair dyeing	0.2 per cent	—	—	30.9.2004
25	2,6-Dimethoxy-3,5- pyridinediamine (CAS No 85679-78-3) and its salts	Oxidising colouring agents for hair dyeing	0.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	Can cause allergic reaction	30.9.2004
26	HC Orange No.2 (CAS No 85765-48-6) and its salts	Non-oxidising colouring agent for hair dyeing	1 per cent	—	—	30.9.2004
27	HC Violet No.1 (CAS No 82576-75-8) and its salts	Oxidising colouring agents for hair dyeing	0.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	0.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	—	30.9.2004
28	2-(3-Methylamino-4-nitrophenoxy)ethanol (CAS No 59820-63-2) and its salts	Non-oxidising colouring agents for hair dyeing	1 per cent	—	—	30.9.2004
29	2-(2-Methoxy-4-nitroanilino)ethanol (CAS No 66095-81-6) and its salts	Non-oxidising colouring agents for hair dyeing	1 per cent	—	—	30.9.2004
30	2-(4-Amino-2-chloro-5-nitroanilino)ethanol (CAS No 50610-28-1) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
31	HC Red No. 13 (CAS No 94158-13-1)	Oxidising colouring agents for hair dyeing	2.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.25 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	2.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.25 per cent	—	30.9.2004
32	Naphthalene-1,5-diol (CAS No 83-56-7) and its salts	Oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.5 per cent	—	30.9.2004
33	2,2’-[2-Hydroxy-trimethylenebis(4-aminophenyl)imino]diethanol (CAS No 128729-30-6) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	Can cause allergic reaction	30.9.2004
34	2-Aminophenol (CAS No 95-55-6) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
35	5-Amino-o-cresol (CAS No 2835-95-2) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
36	2-(2,4-Diamino-phenoxy)ethanol (CAS No 66422-95-5) and its salts	Oxidising colouring agents for hair dyeing	4 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 2 per cent	—	30.9.2004
37	2-Methylresorcinol (CAS No 608-25-3) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
38	4-Amino-m-cresol (CAS No 2835-99-6) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
39	2-Amino-4-hydroxyethyl-aminoanisole (CAS No 83763-47-7) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
40	3,4-Diaminobenzoic acid (CAS No 619-05-6) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
41	6-Amino-o-cresol (CAS No 17672-22-9) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
42	2-Aminomethyl-p-aminophenol (CAS No 79352-72-0) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
43	2-Amino-2-(2-hydroxyethylaminomethyl) (CAS No 110952-46-0 and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
44	N-(2-Hydroxyethyl)-3,4-methylenedioxyaniline (CAS No 81329-90-0) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
45	C.I. Acid Black 52 (CAS No 3618-58-4) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.per cent	—	30.9.2004
46	2-Nitro-p-phenylenediamine (CAS No 5307-14-2) and its salts	Oxidising colouring agents for hair dyeing	0.3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.15 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	0.3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.15 per cent	—	30.9.2004
47	HC Blue No.2 (CAS No 33229-34-4) and its salts	Non-oxidising colouring agents for hair dyeing	2.8 per cent	—	—	30.9.2004
48	4-(2-Hydroxyethylamino)-3-nitrophenol (CAS No 65235-31-6) and its salts	Oxidising colouring agents for hair dyeing	6 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 3 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	6 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 3 per cent	—	30.9.2004
49	2-(4-Nitrophenylamino)-ethylurea (CAS No 27080-42-8) and its salts	Oxidising colouring agents for hair dyeing	0.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	0.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	—	30.9.2004
50	HC Red No. 10 (CAS No 95576-89-9) + HC Red No. 11 (CAS No 95576-92-4) and their salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
51	HC Yellow No. 6 (CAS No 104333-00-8) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
52	HC Yellow No.12 (CAS No 59320-13-7) and its salts	Oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.5 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	0.5 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.5 per cent	—	30.9.2004
53	HC Blue No. 10 (CAS No 102767-27-1) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
54	HC Blue No. 9 (CAS No 114087-47-1) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	1 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
55	2-Chloro-6-ethylamino-4-nitrophenol (CAS No 131657-78-8) and its salts	Oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1.5 per cent	—	30.9.2004
56	2-Amino-6-chloro-4-nitrophenol (CAS No 6358-09-4) and its salts	Oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	2 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 1 per cent	—	30.9.2004
57	C.I. Basic Blue 26 (CAS No 2580-56-5) (C.I. No. 44045)	Oxidising colouring agents for hair dyeing	0.5%	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	0.5%	In combination with hydrogen peroxide the maximum use concentration upon application is 0.25 per cent	—	30.9.2004
58	C.I. Acid Red 33 (CAS No 3567-66-6) (C.I. No. 17200)	Non-oxidising colouring agents for hair dyeing	2 per cent	—	—	30.9.2004
59	C. I. Food Red 1 (CAS No 4548-53-2) (C.I. No. 14700)	Non-oxidising colouring agents for hair dyeing	2 per cent	—	—	30.9.2004
60	C.I. Basic Violet 14 (CAS No 632-99-5) (C.I. No. 42510)	Oxidising colouring agents for hair dyeing	0.3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.15 per cent	—	30.9.2004
		Non-oxidising colouring agents for hair dyeing	0.3 per cent	In combination with hydrogen peroxide the maximum use concentration upon application is 0.15 per cent	—	30.9.2004
61	1-tert-Butyl-3,5-dimethyl-2,4,6-trinitrobenzene (CAS No 81-15-2) (musk xylene)	All cosmetic products, with the exception of oral care products	1 per cent in fine fragrance 0.4 per cent in eau de toilette 0.03 per cent in other products	—	—	30.9.2004
62	4’-tert-Butyl-2’,6’-dimethyl-3’, 5’-dinitroacetophenone (CAS No 81-14-1) (musk ketone)	All cosmetic products, with the exception of oral care products	1.4 per cent in fine fragrance 0.56 per cent in eau de toilette 0.042 per cent in other products	—	—	30.9.2004

(1)

O.J. No. L132, 1.6.1996, p.1.

(2)

SI 2003/835

(3)

Note 2: The concentration of sodium, potassium or lithium hydroxide is expressed as a percentage of sodium hydroxide. In cases of mixtures, the sun must not exceed the limits given in column 4.