Microneedling involves puncturing the skin with tiny sterilized needles. The skin’s healing mechanism responds to the micro injuries that are caused by the needles, which leads to a rise in collagen, important growth factors, and stem cells in the scalp. These all work together to increase the efficiency of your body’s hair production processes. In addition, the needles create tiny channels into the skin, which allows products that encourage hair growth to be delivered directly into the skin for maximum absorption and effectiveness.