I've order this since last summer, about 14 months. I mainly bought it because the natural ingredients were better than other products. I wasn't expecting much, but the gains were actually really good after a few months . I ended up getting the system which is better in the long run. my hair has seen dramatic improvements. A few tips, let the spray stay on you scalp for a few hours before showering or swimming. there is no smell so not noticeable at all. also caffeine shampoo seems expensive but is better than any shampoo i've found. you can tell its premium. you dont need to use a lot at once so lasts a long time, Good luck.