Assuming it does work, how or why would it? I mean, shedding is natural, right? That means your hair has reached the end of its life span and a new hair is growing out of the follicle. If your shedding is decreased, what does that mean? Does that slow down the hair growth? Speed it up? Extend the life span of your hair? Any thoughts on how something like this would work?
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Now, if it encouraged their hair to get longer/thicker - I don't know how much noticeable that would be (esp. if you weren't mildly hair obsessed, already). 

And I think I do get that 50-100 hairs a day. 