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The cancer treating or the chemotherapy, what it goes after, because cancer cells tend to be rather fast dividing cells, so it goes after very fast dividing cells. Hair follicles, they contain stem cells and they fuel hair growth and they're very fast growing. So they're particularly sensitive to chemo and the follicles, the follicle for the hair, it goes into a hyper state of stress. So it either stops hair growth at that point, the follicles then expel fibers in the growth stage or just let them go dormant. So it tends to be this stuff that goes and just expel hairs and go dormant. So post-treatment, so the important thing here is post-treatment, stem cells and follicles, they wake up at this point. The chemo's over, they wake up and hair begins to grow, but it has an altered appearance.