Measuring the effects of cosmetics

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As early as 1970, the Czech dermatologist J. Zahejsky, from Brno, proposed a technique to study the microtopography of the surface of the epidermis, thus allowing an evaluation of product efficacy. Thanks to new devices and techniques in chemistry and physics, it was possible to know the healthy skin better and to objectivize the effects of the products. One progressively evolved from a world of allegations to a world of proof. New methods were developed to measure hydration, firmness, elasticity or makeup stay. Progress due to biophysics allowed the clinical evaluation and the measurement of the effects of the products.
 

Reference book: Cutaneous investigation in health and disease: noninvasive methods and instrumentation, ed. Jean-Luc Leveque. New York and Basel: Marcel Dekker, 1989.   BIU Santé Pharmacie : cote 207109.

Masacara evaluation and make-up efficacy measurement   © LVMH Recherche.

Analysis of cutaneous relief after application of a skincare cosmetic product.   © LVMH Recherche.

Use of a Corneometer CM 820 to measure skin hydration.   © LVMH Recherche.

Research on efficacity of cosmetic products on skin face.   © LVMH Recherche.