Yes, biotin is proven to promote a healthy hair. Biotin is actually vitamin H which is part of the B Complex group of vitamins. When taken regularly, biotin helps your hair looks more shiny and healthy. Your scalp will be stronger and helps in preventing too much hair fall. I've been taking biotin from Hercules Vitamins for almost a year now and everyday I'm getting great results. Indeed, biotin is a promising supplement in helping one maintain a healthy hair.