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Cosmetics Unmasked Ingredients 1-9

These pages list over 6,000 cosmetic ingredients. We have listed over 2,000 ingredients in 'Cosmetics Unmasked', including all of the potentially harmful chemicals and many of the more commonly used cosmetic ingredients. The expression, 'See Cosmetics Unmasked' does not imply that a particular ingredient is included in our book. Clearly, in a book of 404 pages it is impossible to include all 6,000+ ingredients, therefore, if an ingredient is not listed in our book it means that it has no currently known harmful effects and its use in cosmetics is not restricted in any way, or it may be a new ingredient which we have not yet investigated.


The international chemical hazard symbol indicates that there is a potential risk associated with this ingredient. It could be a mild irritant or cause allergic reactions or adverse skin reactions, it could be potentially toxic or carcinogenic, or there may be a risk of contamination with harmful by-products which are formed during manufacture. It could also indicate that there are restrictions on the use of the ingredient. The omission of this symbol does not imply that an ingredient is safe for all individuals. For full details of these particular ingredients and many more, read Cosmetics Unmasked.

Alphabetical lists of Cosmetic Ingredients starting with:

[1-9] [A] [B] [C] [D] [EFG] [H] [IJK]
[L] [M] [NO] [P] [QR] [S] [T] [U-Z]


1,2,3,4-Tetrahydro-6-nitroquinoxaline
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1,2,4-Benzenetriacetate
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1,2,4-Trihydroxybenzene
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1,2,6-Hexanetriol
Origin: Synthetic compound.
Function: Humectant / Solvent / Viscosity adjuster
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1,2-Dibromo-2,4-dicyanobutane
Origin: Synthetic compound.
Function: Additive / Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1,2-Phenylenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1,3-Bis-(2,4-Diaminophenoxy)propane
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1,5-Naphthalenediol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

1-Naphthol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,2'-Thiobis(4-chlorophenol)
Origin: Synthetic compound.
Function: Antimicrobial
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,3-Naphthalenediol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diamino-5-methylphenetol HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diamino-5-methylphenoxyethanol HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diaminoanisole
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diaminoanisole Sulfate
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diaminodiphenylamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diaminophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diaminophenol HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Diaminophenoxyethanol HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Dimethyl-3-cyclohexene Carboxaldehyde
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,4-Toluenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,5-Diaminoanisole
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,6-Bis(2-hydroxyethoxy)-3,5-pyridinediamine HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,6-Diaminopyridine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,6-Dimethoxy-3,5-pyridinediamine HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,6-Dimethyl-7-octen-2-ol
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2,7-Naphthalenediol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Amino-3-hydroxypyridine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Amino-3-nitrophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Amino-4-hydroxyethylaminoanisole
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Amino-4-hydroxyethylaminoanisole Sulfate
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Amino-6-chloro-4-nitrophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Aminobutanol
Origin: Synthetic compound.
Function: pH control
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Aminomethyl-p-aminophenol HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Bromo-2-nitropropane-1,3-diol
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Chloro-5-nitro-N-hydroxyethyl p-phenylenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Chloro-6-ethylamino-4-nitrophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Chloro-p-phenylenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Chloro-p-phenylenediamine Sulfate
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Ethylhexyl Salicylate
Origin: Synthetic compound.
Function: U.V. absorber
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Heptylcyclopentanone
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Hydroxy-4-methoxybenzophenone-5-sulfonic Acid
Origin: Synthetic compound.
Function: U.V. absorber
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Hydroxyethyl picramic Acid
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Hydroxyethylamino-5-nitroanisole
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Methoxyaniline
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Methoxymethyl-p-aminophenol HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Methyl-4-hydroxypyrrolidine
Origin: Synthetic compound.
Function: Oral care agent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Methyl-4-isothiazolin-3-one
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Methyl-5-hydroxyethylaminophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Methylresorcinol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Nitro-5-glyceryl Methylaniline
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Nitro-N-hydroxyethyl-p-anisidine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Nitro-p-phenylenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Nitropropane
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-Oleamido-1,3-octadecanediol
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-t-Butylcyclohexyl Acetate
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

2-t-Butylcyclohexyloxybutanol
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3,4-Diaminobenzoic Acid
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3,4-Methylenedioxyaniline
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3,4-Methylenedioxyphenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Aminopropane sulfonic Acid
Origin: Synthetic compound.
Function: Surfactant
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Benzylidene Camphor
Origin: Synthetic compound.
Function: U.V. absorber
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Carbethoxypsoralen
Origin: Synthetic compound.
Function: Additive / Tanning agent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Ethylamino-p-cresol Sulfate
Origin: Synthetic compound.
Function: Additive / Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Hexenol
Origin: Synthetic compound.
Function: Solvent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Methylamino-4-nitrophenoxyethanol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Methylisothiazolin
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Nitro-4-aminophenoxyethanol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Nitro-p-cresol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

3-Nitro-p-hydroxyethylaminophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4,4'-Diaminodiphenylamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4,4'-Isopropylidenediphenol
Origin: Synthetic compound.
Function: Antimicrobial / Antioxidant
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4,5,8-Trimethylpsoralen
Origin: Synthetic compound.
Function: Additive / Tanning agent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4,5-Diamino-1-methylpyrazole HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4,6-Bis(2-hydroxyethoxy)-m-phenylenediamine HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Amino-2-hydroxytoluene
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Amino-2-nitrodiphenylamine-2'-carboxylic Acid
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Amino-3-nitrophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Amino-m-cresol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Chloro-1,2-phenylenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Chlororesorcinol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Hydroxybenzoic Acid
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Hydroxyindole
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Hydroxypropylamino-3-nitrophenol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Isopropyldibenzoylmethane
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-methoxyaniline
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Methoxytoluene-2,5-diamine HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Methylbenzylidene Camphor
Origin: Synthetic compound.
Function: U.V. absorber
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Nitro-m-phenylenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Nitro-o-phenylenediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Nitro-o-phenylenediamine HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Nitroguaiacol
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

4-Nitrophenyl Aminoethylurea
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5,7-Dihydroxy-4-methylcoumarin
Origin: Semisynthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5,7-Dihydroxycoumarin
Origin: Synthetic compound.
Function: Additive
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5-Amino-2,6-dimethoxy-3-hydroxypyridine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5-Amino-6-chloro-o-cresol
Origin: Synthetic compound.
Function: Antimicrobial / Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5-Bromo-5-nitro-1,3-dioxane
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5-Chloro-3-methyl-4-isothiazolin-3-one
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5-Chloro-3-methylisothiazolone
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

5-Methoxypsoralen
Origin: Synthetic compound.
Function: Additive / Tanning agent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Amino-m-cresol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Amino-o-cresol
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Hydroxyindole
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Methoxy-2,3-pyridinediamine HCl
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Methyl Coumarin
Origin: Semisynthetic compound.
Function: Oral care agent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Methylquinophthalone
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Nitro-2,5-pyridinediamine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

6-Nitro-o-toluidine
Origin: Synthetic compound.
Function: Hair dye
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

7-Dehydrocholesterol
Origin: Synthetic compound.
Function: Emulsion stabiliser / Viscosity adjuster
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

7-Ethylbicyclooxazolidine
Origin: Synthetic compound.
Function: Preservative
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

7-Methylpyrido[3,4,c]psoralen
Origin: Semisynthetic compound.
Function: Additive / Tanning agent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'

8-Methoxypsoralen
Origin: Semisynthetic compound.
Function: Additive / Tanning agent
Restrictions and Adverse Effects: See 'Cosmetics Unmasked'


© Gina & Steve Antczak, 2001

This page was last updated, 10 February 2002

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