Are there any products on the market that are scientifically proven to dramatically encourage scalp hair growth for those who simply want to grow longer hair?

Yes. There were many products for hair growth. You may try this site - http://www.amazon.com/Hair-Shampoo-Ketoconazole-Exfoliating-Penetration/dp/B004X34T4S
Updated on Monday, February 06 2012 at 02:37PM EST
Collection: human hair growth