EN 16956:2017

European foreword
Introduction
1 Scope
2 Principle
3 Reagents
4 Apparatus and equipment
5 Procedure
6 Evaluation
7 Test report
Annex A (informative) - Example of chromatograms
        obtained
Annex B (informative) - Validation Data for the
        quantitative method hydroquinone and its
        three ethers
Annex C (informative) - Validation data for the
        quantitative method for the 4 most frequently
        found corticosteroids
Annex D (normative) - Screening methods for the
        identification of hydroquinone, 3 ethers of
        hydroquinone and 38 corticosteroids
Bibliography

This European Standard specifies a HPLC/UV method for the identification and quantification of hydroquinone, 3 ethers of hydroquinone and 4 corticosteroids most frequently found in illegally sold skin whitening cosmetic products: clobetasol propionate, betamethasone dipropionate, fluocinonide and fluocinolone acetonide.This standard also gives HPLC/UV methods for the identification of 38 corticosteroids that may be found in skin whitening cosmetic products (see Annex D).This standard is not dedicated to artificial nail products or soaps.