Currently, there is not enough evidence to confirm that biotin helps promote hair growth. Claims that it helps hair grow faster are incorrect, according to Everyday Health. Studies do indicate, however, that taking biotin supplements improve the strength of hair.
Biotin is a B vitamin that is not stored in the body. Many foods in a healthy diet include biotin, which supports healthy skin, nails, eyes, liver and a properly functioning nervous system. Biotin deficiency is rare but may occur in individuals with poor diets, people experiencing rapid weight loss or during pregnancy, explains Everyday Health. There are no reported side effects associated with the consumption of biotin supplements.