Martiderm Black Diamond Proteum Serum helps combat wrinkles, refir and protect the skin against aging. With triple action: anti-wrinkle, refirming and antioxidant. Locks aging attenuate the lines and wrinkles. It stimulates natural cell regeneration and protects the skin against daily external aggressions. Increases firmness, elasticity and luminosity of the skin. Provides hydration and smoothness, with a pearly finish. Ideal for mature skin.