Works well, but for how long? [SEP] I wanted a fairly stiff brush to rid my back of itchy dead skin.  This brush is great for that; it is nice and stiff, and I haven't had any trouble with the head coming off unexpectedly (nor have I figured out how to detach it, but I haven't needed to either).<br />The problem:  the bristles aren't attached securely enough.  Within two days of my getting the brush, two or three holes' worth of bristles had come out.  Now there are four empty holes.  I haven't been unduly rough with the brush--in fact, the bristles in one hole came loose, as far as I can tell, when no one was using the brush and it was just hanging from the shower's door handle!  So I like the product, but I don't know how long it will last.