First, I want to say that I naturally very thin hair, it hardly grows and turns through menopause more than usual. For me it is very important how a product is composed, because I react badly sensitive to additives. Incidentally, I tend rather to natural resources. I had already tried this product, but probably not long enough, because then I could not notice any improvement, they fell me from the beginning, also strengthened. Today, after repeated use and after sufficient research, I must say that to me then amplified failed hair would always failed because they were dead. For years I am suffering fibromyalgia and I feel through this preparation a little improvement, it may be due to the ingredient MSM. My hair falls barely out, they are no longer so dry and what I also noticed she no longer turn gray as strong after as before. I'll take this product further, because maybe I get with the times a little more fullness in my hair. Optimal Hair can I really only recommend and I would not write this if I hear no improvement. However, you should bring along some patience, probably the fact that the waste products have to be abtranzportiert.