When I apply toppik fibers on my scalp, it usually just conceals the thinning areas with a light layer. However, near my part at the front of my head, the toppik always clumps up directly on the scalp. At first it didn't bother me because it covers up the thinning area, but now I'm worried that hair can't grow through the fibers. In other words, at the area just adjacent to the part, there's usually a build-up of fibers- will this inhibit hair growth? I read that hair growth is controlled from inside, not above, but how can the hair grow up if there are these clumped up fibers on top?