Doctor’s Best Biotin is a coenzyme and B vitamin that helps promote healthy hair, skin and nails. Clinical observations of biotin deficiency show its importance for the upkeep of healthy skin and hair, as well as for the immune and central nervous systems. The body needs biotin in order to make energy and to efficiently utilize proteins, carbohydrates, and fats, but cannot make biotin and therefore must obtain it from the diet. Gluten Free, Non-GMO, Vegetarian, Vegan What is Doctor’s Best Biotin? Doctor’s Best Biotin provides an ample dose of the B vitamin biotin that promotes healthy hair, skin and nails. Clinical observations of biotin deficiency shows its importance for the upkeep of healthy skin and hair, as well as for the immune and central nervous systems. The body also uses biotin to produce energy and to efficiently utilize proteins, carbohydrates, and fats. Since the body cannot make biotin it must be obtained from the diet. Clinical studies have found that biotin supplementation helps improve the hair, skin, and nails.