FUNCTION Soothing, anti-blemish. Reduces acne scars and visible pores. INSTRUCTIONS FOR USE Apply morning and night to a cleansed face and neck. Driven by ecobiology, Bioderma Research has developed Sébium Serum, the first ecobiological serum against imperfections and signs of aging. The complementary action of precisely dosed active ingredients (Salicylic Acid, Acetyl Glucosamine, Hyaluronic Acid) and FLUIDACTIV™ Technology immediately address the visible signs and underlying causes of acne-prone adult skin. - Anti-Blemish: Salicylic acid smooths the skins surface to quickly reduce spots, while Fluidactiv™ Technology biologically prevents sebum oxidation and, therefore, the appearance of new blemishes. - Anti-marks: Salicylic acid acts on the surface to renew the skin, while Acetyl Glucosamine, naturally present in the skin, biologically promotes cell renewal from within. - Smoothing effect: Biomimetic hyaluronic acid hydrates the skins surface, while Acetyl Glucosamine boosts the skins internal synthesis of hyaluronic acid to durably reduce expression lines.