My hair takes forever to grow are any vitamins I should take?

Multi and folic acid. Sometimes, slow growth can mean a chronic disease like hypothyroidism as well, so you should consider a visit to your doctor to discuss that. If everything is normal, your hair needs vitamins to grow. Taking once-a-day multi-vitamins will ensure that your hair has the materials it needs to grow. Folic acid will normally increase the growth of your hair even more.