Biologique Recherche Toleskin Collection is specifically formulated for epidermises that can no longer tolerate any cosmetic products, more commonly known as Intolerant Skin Instants^©. Intolerant skin is healthy skin which may enter into crisis conditions due to a number of combined factors: impaired skin barrier, unbalanced microbiome and disproportionate inflammatory response. This collection features ultra-purified formulas containing no preservatives, manufactured in a sterile environment and tested under dermatological control.