HC RED NO. 11 is graded C (Moderate) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-SAFETY-.
HC RED NO. 11
Safety grade: C
HC Red No. 11 is a synthetic red colorant specifically designed for hair dye products. It's a small molecule that penetrates the hair shaft to provide long-lasting color.
This ingredient is used in hair dyes to impart red color to hair strands through a semi-permanent or permanent coloring process.
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