ACID YELLOW 1 is graded A** (Safe) by Expert·ING, based on COSING regulatory data.
ACID YELLOW 1
Safety grade: A**
Acid Yellow 1 is a synthetic yellow dye commonly used in hair coloring products. It's a water-soluble colorant that binds to hair to create or enhance yellow tones.
This ingredient is used in hair dyes to provide yellow coloring and help achieve the desired hair color results.
Graded using: COSING.
Last verified: May 26, 2026
Other Hair Dyeing ingredients
- RESORCINOL — Grade E**
- THYMOL — Grade A
- M-AMINOPHENOL — Grade C**
- P-AMINOPHENOL — Grade C**
- 2-METHYLRESORCINOL — Grade C
- 4-AMINO-2-HYDROXYTOLUENE — Grade C
- P-PHENYLENEDIAMINE — Grade D**
- 2-METHYL-5-HYDROXYETHYLAMINOPHENOL — Grade C