Retinol 0.5 contains 0.5% pure retinol and is enhanced with the latest stabilization and delivery technologies to provide maximum efficacy. Studies show retinol helps diminish the appearance of fine lines, wrinkles, and age spots from both environmental and intrinsic aging. Additionally, retinol help minimize the appearance of pore size, while reducing blemishes associated with problematic skin. Retinol 0.5 is ideal for continued use or for conditioning skin as a prerequisite to SkinCeuticals Retinol 1.0.