Fine lines and deep wrinkles are no match for Neocutis Bio-Serum (with PSP). This anti-wrinkle treatment has a concentrated formula that helps to boost your skin’s natural renewal process. The formula’s active ingredient, PSP, is a proprietary blend of growth factors, cytokines and interleukins. Bio-Serum is unique in that it contains 100 percent more PSP than any other Neocutis product. As a result, this anti-aging serum instantly hydrates, smooths and firms mature skin. Over time, Bio-Serum will also improve the appearance of fine lines, wrinkles, dullness, sagging skin, and uneven tone and texture.