I bought this product through my best friend who is a hairdresser, and I can tell you I've seen the results, effectively as a professional, she wanted to try this product on her husband, not sell a product that would not be effective, its customers !! And I can tell you I have seen the photos before and after 3 months and it really works, the regrowth and really visible and consistent. So there I'll test it on my darling, who hurry to start, of course it must be done carefully. But frankly I saw the result and I'm blown away !!!