4-Amino-2-Hydroxytoluene
4-amino-2-methylphenol; 5-amino-2-methylphenol
Aminophenol-class dye intermediate with sensitization potential; used as a coupling agent in oxidative color systems. Not recommended without patch test.
Function & Common Use
Oxidative Hair Dye / Coupling Agent
Hair Dyes
Permanent hair color
Synthetic
Concentration Limits
Not explicitly specified; aligned with BIS IS 4707
1.5% in ready-to-use oxidative hair color
No federal limit specified
Restricted; MFDS safety standards apply
Format restriction: Oxidative use only; label warning required; patch test recommended
Baby restriction: Yes
Pregnancy: No
IFRA: No
Frequently Asked Questions
Is 4-Amino-2-Hydroxytoluene safe to use in skincare?
4-Amino-2-Hydroxytoluene has a Medium concern rating. Aminophenol-class dye intermediate with sensitization potential; used as a coupling agent in oxidative color systems. Not recommended without patch test.
Is 4-Amino-2-Hydroxytoluene allowed in India?
4-Amino-2-Hydroxytoluene is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is Not explicitly specified; aligned with BIS IS 4707.
What is 4-Amino-2-Hydroxytoluene used for in cosmetics?
4-Amino-2-Hydroxytoluene functions as: Oxidative Hair Dye / Coupling Agent. It is commonly found in: Permanent hair color.
Can 4-Amino-2-Hydroxytoluene cause an allergic reaction?
Yes. 4-Amino-2-Hydroxytoluene has an allergen flag (Yes). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is 4-Amino-2-Hydroxytoluene safe for babies?
4-Amino-2-Hydroxytoluene has baby/child restrictions: Yes. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: Annex III (restricted)
Identifiers
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