Biotherm's ultra-effective skin care draws on the power of a unique concentrate of active ingredients: Pure Extract of Thermal Plankton(TM) (PETP). Recognized by the international scientific community, PETP(TM) has exceptional soothing qualities thanks to its perfect affinity with skin cells. Skin also benefits from the natural wealth of essential trace elements, mineral salts and proteins found in this concentrate. Whatever your skin type, lifestyle, or environment, Biotherm has a solution for you.