Derma rolling creates micro-abrasions within the top layer of the skin. The bodies natural response is to send vital nutrients and collagen to the site of the rolling. The naturally produced nutrients and collagen is then taken up by the hair follicles and skin thus stimulating growth and repair. Derma rolling also creates microscopic channels within the top layer of the skin. These channels dramatically increase the effectiveness of topical applicants such as minoxidil by improving its absorption. We have a detailed discussion on the scientific studies conducted on our blog post below.