Developed to support healthy-looking hair from within, the Hair Gain Capsules combine clinically tested AnaGainTM with hair vitamins and minerals to contribute to the maintenance of normal hair (1). Arriving as a one-month supply, the capsules also offer benefits for the health of your skin and nails (2,3). Vegetarian and vegan-friendly. 1. Zinc and Biotin contribute to the maintenance of normal hair. 2. Niacin contributes to the maintenance of normal skin. 3. Zinc contributes to the maintenance of normal nails.