Herbs of Gold Biotin 3mg provides high-strength biotin, also known as vitamin B7, to support healthy hair, skin and nails. • Biotin is an important water-soluble B vitamin that is involved in keratin production. • Biotin 3mg supports nail strength, thickness and health. • Biotin 3mg maintains the health of skin and hair. • Biotin 3mg helps the metabolism of protein, carbohydrates and fats. • Biotin is an essential cofactor for enzymes that catalyse metabolic functions. • Biotin 3mg maintains biotin levels in the body.