HC BLUE NO. 16 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
HC BLUE NO. 16
Safety grade: A
HC Blue No. 16 is a synthetic colorant specifically designed for hair coloring products. It's a chemical dye that penetrates the hair shaft to deposit blue color.
This ingredient is used in hair dyes to provide long-lasting blue color to hair by penetrating and bonding with the hair structure.
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