Microneedling is a minimally invasive cosmetic procedure that’s used to treat skin concerns by stimulating collagen production. Also known as collagen induction therapy, this treatment creates micro-punctures in the skin using miniature, sterilized needles. According to the American Academy of Dermatology Association (AAD), the skin’s healing process after microneedling can help reduce the appearance of scars and dark spots as well as improve skin elasticity. Also, though more research is needed, a 2021 reviewTrusted Source suggests that microneedling may promote hair growth in people with alopecia.