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Monday, August 26, 2024Ingredients

HC Yellow 16: SCCS Scientific Advice

HC Yellow 16 : Avis scientifique du CSSC

Following the provision by industry of new data on its purity, the hair dye ingredient HC Yellow No.16 (B123) is undergoing a new safety assessment by the SCCS. The Scientific Committee has just published the preliminary version of its Scientific Advice, open for comment until 27 September 2024.

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Background

HC Yellow 16 (CAS No.1184721-10-5, EC No.-) may be used as an ingredient in oxidative and non-oxidative hair dye formulations.
In 2015, the SCCS concluded that “…the use of HC Yellow No.16 (B123) as an ingredient at 1% in oxidative hair dye formulations and at 1.5% in non-oxidative hair dye formulations is safe,” but it stated that “the purity of HC Yellow No.16 and impurities in it [were]] not adequately quantified.”
In February 2024, the industry provided new informations on the substance’s purity.

For an exhaustive background information, see the articles
HC Yellow No.16, HC Red No.18: Opinions of the SCCS, CosmeticOBS, 20 January 2016
Hair dyes: the SCCS revised three Opinions, CosmeticOBS, 13 April 2016
Hair dyes: requests for Opinions to the SCCS for B123 and B124, CosmeticOBS, 9 April 2024

The SCCS Scientific Advice

1. In light of the data provided, does the SCCS consider HC Yellow 16 safe, when used as an ingredient at 1% in oxidative hair dye and at 1.5% in non-oxidative hair dye formulations?

In the light of the data provided, SCCS considers that the use of HC Yellow No.16 (B123) as an ingredient at 1% in …

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