Cleansing skin that is dry and/or sensitive is a delicate process since often times it is the cleansing process that can cause a sensitivity reaction. La Roche Posay Physiological was developed in order to meet the cleansing needs of skin that is particularly dry and reactive. Many cleansers on the market contain harsh detergents that strip natural moisture out of the layers of the skin. La Roche Posay Physiological removes impurities while respecting the natural oils that are found in the dermis. Stripping the skin of its moisture can weaken the natural lipid barrier and cause further problems. La Roche Posay Physiological uses calming and soothing agents to prevent sensitivity reactions and reduce the appearance of red and irritated skin.