Nutritional products, including food and/or beverage compositions, pharmaceutical and cosmetic preparations and methods of use are disclosed for the prevention, suppression and treatment of skin, hair, and nail conditions for the improvement of skin, hair and nail growth through the identification and/or use of stem cells, as well as maintenance of healthy tissues. Uses of Ergothioneine and/or Vitamin D to neutralize free radicals, and improve skin, hair and nail growth are disclosed.
