This product is designed to strengthen the epidermal shield, exfoliate skin, regulate excessive sebum secretion, hydrate skin, maintain the skin’s pH. The moisturizer also contains Malic acid. It increases cell turnover. Biologique Recherche P50 helps shed dead skin cells and increase the rate of cell renewal for softer, radiant and younger-looking skin. It balances Sebum excretion - if you have an oily T-zone and dry cheeks, using Lotion P50 will create a balance between the two and help the skin restore vitality.