HC yellow No 17
The third hair dye ingredient assessed was HC yellow No 17 for use in non-oxidative hair colouring products at a maximum concentration of 0.5%, and was also deemed safe at these levels.
“The SCCS considers the hair dye HC Yellow No. 17 (B121) safe when used in non-oxidative hair colouring products at concentrations of up to 0.5%, except for its sensitisation potential,” says the Opinion. “HC Yellow No. 17 is considered a strong sensitiser.”
Submission I on the hair dye ingredient, with the chemical name Di-[2-[4-[(E) -2-[2,4,5-trimethoxyphenyl] vinyl]pyridinin-1-ium] butanoyl] aminoethyl]disulfanyl dichloride, was transmitted by Cosmetics Europe in April 2014.
The new ingredient HC Yellow No. 17 (B121) is planned to be used in non-oxidative hair colouring products at concentrations of up to 0.5%.
