I don't know if this is coincidence or not but if I use my aculas laser (which is a pretty powerful laser) at night, the next day I barely shed but on the nights that I don't use it, I shed more the next day. And this so called coincidence has been happening for at least over a year or more. So maybe, it may at least decrease shedding. Maybe that is a positive thing or maybe not. Its like taking Propecia, how do I really know if its having any positive effect on my hair or would I be just as well without it. Unfortunately, I would have to quit the drug to find out. In my case, it was impossible to know because my hair got worse than the baseline. But for people like MJ, you can see it definitely helps in his case because he exceeded his baseline.