Longévité was developed to nourish your skin with natural vitamins that enhance your skin's ability to combat harmful environmental conditions that cause premature aging of the skin. The Longévité products are the result of extensive scientific study and research on natural biologic phenomena. These products are a breakthrough in skin care technology because they contain high concentrations of vitamins and nutrients to provide directly "nutrition of the skin through the skin." For the first time in any cosmetic formulation Longévité provides high concentrations of pure, natural vitamin E (d-alpha tocopherol) -- not simply the mixture of thirty six isomers found in most cosmetics, not the synthetic ester form which is taken orally and is only very minimally effective when applied to the skin and which can cause allergies reactions. This natural vitamin E is combined with beta-caratene, another free-radical quencher. These nutrients enhance the natural ability to degrade the damaging free radical molecules formed by sun exposure and pollutants that could otherwise cause premature aging of the skin. All Longévité products are devoid of extra irritating components. They have all been dermatologist approved. The effectiveness of active ingredients in these products has been studied and tested by Karen E. Burke, M.D Ph.D., an American board-certified dermatologist and dermatologic surgeon and a scientific researcher with a doctorate degree in chemistry and biophysics. Longévité Night Cream with 5% Vitamin E