Biologique Recherche Serum Progeskin is an effective serum against the visible signs of skin aging. The product's dual-action formula targets the two main proteins involved in this phenomenon: progerin and Klotho protein, both of which provide unprecedented rejuvenation of the epidermis; the skin is firmer, tighter, and plumper. Facial contours are smoother, and wrinkles and fine lines are visibly reduced. The skin looks younger and more rested.