Tocopherol, the most biologically active form of vitamin E, is a fat-soluble antioxidant widely used in skincare for its ability to protect against oxidative stress and environmental damage. It neutralizes free radicals, prevents lipid peroxidation, and helps maintain cell membrane integrity, thereby reducing signs of aging such as fine lines and wrinkles. Tocopherol also strengthens the skin barrier, enhances moisture retention, and soothes inflammation, making it valuable for sensitive and dry skin. In formulations, it serves as a skin-conditioning agent, emollient, and stabilizer, supporting hydration, barrier repair, and overall skin health in creams, serums, sunscreens, and makeup.