Microneedling is a minimally invasive cosmetic procedure that uses small needles that prick the skin to stimulate collagen production. The idea is that pinpricks from the procedure cause slight injury to the skin and the skin responds by making new collagen-rich tissue. This new skin tissue is, in turn, more even in tone and texture. It’s normal for the skin to lose collagen due to age or injury. Also known as collagen induction therapy, this treatment is effective for the appearance of acne scars and wrinkles.