TETRABROMOPHENOL BLUE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
TETRABROMOPHENOL BLUE
Safety grade: A
Tetrabromophenol blue is a synthetic chemical dye that produces a blue color. It is commonly used in hair coloring products to create or enhance blue tones in hair.
This ingredient acts as a colorant in hair dyes, depositing blue pigment onto the hair shaft to create or intensify blue hair color.
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