Sol Nutrition Let It GrowYour all in one hair and nail supplement for luscious locks and resilient nails. Tired of finding more hair in your brush than on your head? Unlock the secret to healthier, stronger hair and nails with Let It Grow. Rich with herbs that contain naturally occurring Biotin, Collagen, and essential nutrients to support hair growth and texture, this hair and nail supplement is made with a powerful herbal blend that will leave your hair and nails looking