Microneedling is the insertion of very fine short needles into the skin for the purposes of rejuvenation. For those looking to improve the look of scars, boost collagen, or encourage hair growth, microneedling might offer a minimally invasive solution. This triggers the body's wound healing process, stimulating collagen and elastin production. Additionally, products applied topically are able to penetrate deeper into the skin in order to work more effectively. Skin treated with four microneedling sessions spaced one month apart produced up to a 400% increase in collagen and elastin six months after completing treatment.