Ursula Vincent

TL;DR: A candidate reference method is validated that enables the identification and quantification of hair dye-forming compounds and includes common criteria such as the repeatability of the analysis and the establishment of figures of merit.

TL;DR: In this article, the authors have shown that a reference method for the analysis of oxidative hair dyes should include a compulsory extraction step before submission of samples to RP-HPLC.

TL;DR: A method has been developed and validated for the analysis of commonly used intermediates of oxidative hair dyes in commercial cosmetic formulations, including both liquid and cream forms, in dark and blonde shades, found to be highly suitable for the identification and quantification of dye intermediates.