Microneedling, or collagen induction therapy, is a nonsurgical treatment to rejuvenate your skin. Collagen is a fibrous protein that helps your skin stay smooth, supple, and tight. Eventually, your supply of collagen is depleted, and your skin gets less elastic and thin. Microneedling makes tiny wounds on your skin. These micro-injuries cause your skin to generate new skin cell growth and increase collagen production. Once healed, your skin is brighter, firmer, and healthier.