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Type: Article
Section: Cosmetic Ingredients > Colorant
Rapid Colorimetric Analysis of para-Phenylenediamine in Henna-based, Non-permanent Tattoo Color Mixtures
In some henna mixtures, para-phenylenediamine (PPD) has illegally been added and it is responsible for complications such as allergic contact dermatitis. While high-performance liquid chromatography has previously been used to detect PPD, a colorimetric method that is faster and portable, described here, has been developed. For product developers, this method can be used to evaluate henna plant extracts.
Jul 17th, 2013
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