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Hair resistance to breakage assay

Regulatory reference: Proprietary method
Claim: Strenghtener
Application field: Strengthening hair products.
Description of the test: Dynamometric analysis of the tensile strength and resistance to breakage on treated and untreated hairs collected ex vivo from 20 volunteer. Results in terms of tensile strength (in Newtons) and percentage of strengthening compared to the untreated control.
Posted in Strenghtener, Hair products, Claim for cosmetics