Wow, I haven't had any problem with hair loss... But I also started using the Sally Beauty version (Hair One) after my first bottle of Wen. I typically wash my roots with regular shampoo, and then use the Hair One as directed. When I do that, I can typically skip a day of washing.
It tookme three seperate tries to like Wen. The last one wass the pommegranate. I actually LOVE using this product. I have not heard about hair loss and have not had any problem with that. As far as felling greasy, I don't use nearly as much as the directions say to. I have short/medium hair that is fairly thick. It;s color treated. I wash it every other day and use about 8-12 pumps, using one pump after rinsing well. I didn't think I would, but I do!
I tried Sally's version of this - Hair One. After about 2 wks of using it, I quit. It left my hair really greasy. Not to mention it just looked bad since it looked dirty. It's still sitting there 80% full. I will use it to shave or as a conditioner.