One of the most crucial vitamins you may take to encourage hair growth is biotin. By helping to produce fatty acids, biotin promotes your scalp’s health, which benefits your hair’s health. According to the ProHealth website, a lack of essential fatty acids can cause symptoms like dry, scaly, or flaky skin, dandruff, dry, brittle hair, or dermatitis, all of which can result in hair loss. Hair loss brought on by a poor diet can be prevented by eating foods high in biotin or taking a biotin supplement. By taking biotin, you are also supporting the keratin in your hair, which strengthens it. Your skin, hair, and nails are all comprised of keratin. Combining biotin with other B vitamins will result in a potent remedy to help prevent hair loss.