Bosley Healthy Hair Growth Supplements Capsules 60 count Healthy Hair Growth Supplements may combat hair loss with DHT inhibiting botanicals plus Biotin, Niacin and Zinc for thicker, fuller-looking hair. Biotin helps strengthen the hair follicle while Niacin and Zinc maintain healthy hair and reduce shedding. Pumpkin Seed Extract, available in the Men's Healthy Hair Supplements, is a natural DHT-blocking ingredient rich in vitamins and minerals. May also improve the appearance of skin and nails.