Hi all. HOpe to start posting more again, after a long hiatus. I am curious to know if anybody has used both Nioxin and Nissim. From my research, both see to be the big heavy hitters in the shampoo for thinning hair dept. Both also seem to have done extensive work on research and development of products appropriate for hair loss (or maybe they just have very slick marketing departments). I have used Nioxin for the past several months...I find it's OK. But have thought of trying Nisim now. Any feedback is appreciated. Thank you!