Olay Regenerist Antioxidant is Olay’s most scientifically advanced formula, crafted with three active vitamins (Vitamin B3, C, E). Experience up to +40% stronger skin barrier* to fight against external and internal stressors for even healthier skin. Vitamin B3 (Niacinamide) strengthens the skin barrier by energising the skin to protect it from oxidative stress, while Vitamin C strengthens the skin barrier by reducing the damage caused by environmental stressors and helping to reduce signs of premature ageing. Vitamin E strengthens the skin barrier by combining with the skin’s natural oils to enhance skin barrier protection.