Microneedling

Microneedling, also known as derma rolling, involves using a roller with tiny needles ranging from 1 mm to a few mm in length rolled over the affected scalp area, creating small wounds in the scalp. These wounds are thought to stimulate the release of essential growth factors, improve blood supply through neovascularization, and induce collagen formation. The combination of these effects is believed to stimulate the growth of hair follicles and thicken the hair shafts. The scalp is thick, and using a microneedling device may improve the penetration of topical hair loss treatments such as minoxidil or topical steroids used to treat alopecia areata. Microneedling may cause bruising, swelling, pain, redness, infection, and scarring. No large-scale studies have been conducted that prove using microneedling alone is an effective therapy for hair loss. Most of the published studies have been done in combination with topical hair loss treatments. Many hair loss excerpts believe that microneedling leads to increased scar tissue formation in the scalp, which in turn can contribute to hair loss.