I recently had biatric surgery to lose wt. I went to a support group and they had a hair dresser there. Some women have thinning of the hair with the rapid wt . lost. This is even great for those who have lost their hair do to Chemo. It is called Biotin Forte and you don't need a prescription for it but do need to ask the pharamacy for it. As it is kept behind the counter. it comes in 3mg and 5 mg. Wal-Mart sells it for 3mg 60 talbets. $10.17 5mg 60 tabs for 12.38. They usually can get it for you within 24 hours. It will take 2-3 months for new hair growth. The pharamist told me that it is full of vit b and others that help with hair growth and strenghten your nails. Hope this helps