CI 21230 /SOLVENT YELLOW 29CI 21230SOLVENT YELLOW 29 is graded F (Banned) by Expert·ING, based on EU COSING Annex II regulatory data. It is restricted under EU COSING — AnnexII.

CI 21230 /SOLVENT YELLOW 29CI 21230SOLVENT YELLOW 29

2,2'-[Cyclohexylidenebis[(2-methyl-4,1-phenylene)azo]]bis[4-cyclohexylphenol] (Solvent Yellow 29; CI 21230) when used as a substance in hair dye products

Safety grade: F

This chemical substance is prohibited in EU cosmetic products under COSING Annex II. It has been banned due to safety concerns identified by EU regulatory authorities.

Graded using: EU COSING Annex II.

• EU COSING — Prohibited

Last verified: June 7, 2026