Bulletprooff your skin, hair & nails Collagen, one of the fundamental building blocks of your skin & connective tissue is essential to your health. It not only promotes skin elasticity, it also helps to provide structure to your bones and joints - great for those joint aches and pains (or those suffering from arthritis). Studies have shown the ingestion of collagen has significantly improved skin laxity, repaired collagen fibers, increased collagen content in aged skin. Biotin (Vitamin H) helps to metabolize fats and carbohydrates, and has been linked to improved hair and nail strength by helping to thicken nail cuticles. It has also shown effects in lowering cholesterol as well as helping to regulate blood sugar.