Purgo Health Hair, Skin and Nails provides you with the vital nutrients your body needs to support your natural beauty from within. Vitamin A assists with skin maintenance and overall health. B vitamins help with energy metabolism. Biotin helps to maintain healthy hair. Vitamins E and C are antioxidants. Vitamin E contributes to skin health and Vitamin C is involved in collagen production and formation, which forms the basis for vibrant skin.