Non therapeutic process for tracing a composition comprising a compound enriched with a stable non radioactive isotope

摘要

A cosmetic or dermatological composition for topical use comprises one or more compounds consisting of at least one atomic element enriched in at least one stable non-radioactive isotope which is a natural isotope of an element possessing at least two stable natural non-radioactive isotopes. Independent claims are also included for the following (1) the use of compound to prepare a composition for topical use; and (2) a non-therapeutic process of traceability of the compound contained in a composition comprising following the progress and or modifications of the compound after application to keratinic matter, measuring the penetration or non-penetration of the compound after application and following in the environment the progress of the compound after its elimination by washing of the keratinic fibers.