The one proven compound to increase hair growth over time is minoxidil, which is not contained in this product. But if you looking to try a more natural alternative, and are not willing to use products such as minoxidil (minoxidil is toxic), then this is a good alternative to try. I have been using Biotopic for one month. I gave this product a 5 star review, since the product itself if packaged well, tolerated on the scalp well, and does not have any harsh smells. It is a good alternative to those who do not want to use a drug like minoxidil or who gets irritation from the use of minoxidil. Also Hair wont fall out when you stop using it. Who really wants to put minoxidil on their head for the rest of their lives?