Biotin Dietary Supplement Solgar Biotin 1000μg: Biotin belongs to the B vitamin complex. It participates in cell growth, the production of fatty acids, the metabolism of carbohydrates, fats and proteins and the utilization of the remaining vitamins of the B vitamin complex. Biotin is essential for maintaining healthy hair, nails, and skin and can help in cases of seborrheic dermatitis and seasonal hair loss.