BASIC YELLOW 11 is graded F (Banned) by Expert·ING, based on EU COSING Annex II regulatory data. It is restricted under EU COSING — AnnexII.

BASIC YELLOW 11

3H-Indolium, 2-(2-((2,4-dimethoxyphenyl)amino)ethenyl]-1,3,3-trimethyl- and its salts, 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