I have tried many products before. This is the best. I had minimal results with Rogaine or Kirkland 5% minoxidil. With 5% minoxidil, I saw some little fuzzy hairs grow, but they never really amounted to anything (after well over a year of continual use), but now after 1 month with this 15% minoxidil, those little fuzzy hairs are much more abundant, and some of them are actually beginning to get color! I will stick with this product, my hair is thicker now than it was years ago (age 35 now, hair loss began at age 29).