ACID YELLOW 23 ALUMINUM LAKE is graded C (Moderate) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-SAFETY-.
ACID YELLOW 23 ALUMINUM LAKE
Safety grade: C
This is a bright yellow colorant made by combining a synthetic yellow dye with aluminum to create a stable pigment. It's designed to adhere well to hair fibers and provide long-lasting color.
This ingredient is used in hair dyes to provide vibrant yellow coloration that bonds to the hair shaft, creating lasting color tone.
Graded using: COSING.
- EU COSING — Restricted
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