Engineer and Doctor in Food Science and Human Nutrition I come back to the Chemical issue developed as part of my master’s internship. I transform this multidisciplinarity into asset and currently, as a teacher-researcher at the University of Le Havre (Urcom) I develop the theme of cosmetic ingredients: link between the structure and the physicochemical, sensory and biometric properties to find in the end correlations between in vitro and in vivo methods.