NUTRIENT SUPPORT FOR HAIR, SKIN, AND NAILS - Hair, skin, and nails all contain the fibrous protein keratin, which is rich in sulfur-containing amino acids, especially cysteine. Keratin is a filament-forming protein, whose molecules are entwined around each other in long filaments that are cross-linked by bonds between the sulfur atoms. This twining and cross-linking is dependent on various nutrients and gives the keratin structures their strength. * WIDE ARRAY OF NUTRIENTS - H-S-N Complete is a comprehensive formula which combines a wide array of vitamins, minerals, amino acids, and botanicals to provide building blocks necessary for healthy hair, skin, and nails. The formula contains Vitamin C, Biotin, Collagen Peptides, Glucosamine Sulfate, L-Glutamine, Aloe Vera and silica from Bamboo Extract. * CONTAINS ALBION CHELATED MINERALS - The formula contains Albion Chelated Zinc, Copper, and Manganese for superior absorption. * ALWAYS PURE & EFFECTIVE PRODUCTS - This product is Non-GMO, Vegetarian-Friendly, and contains No Gluten, Dairy, or Soy. DFH is transitioning to tinted glass bottles. In addition to being more eco-conscious, tinted glass offers a greater moisture barrier against moisture and oxygen, which helps protect nutrient viability.* OVER 50,000 DOCTORS AGREE - Designs for Health is the physician's choice for top quality professional strength supplements since 1989. Our "Science First" philosophy ensures our products are based on the most recent research and use the highest quality raw ingredients.