Biotin is one of the B-Complex vitamins. Biotin helps support healthy hair, skin and nails and is an essential nutrient for the normal metabolism of carbohydrates, protein and fats.* Unconditionally guaranteed for purity, freshness and label potency. No added sugar, yeast, preservatives, artificial flavors or colors. Product Benefits. Vitamin Supplement. Hair, Skin & Nail Support. Gluten Free.