Microneedling is a minimally invasive cosmetic procedure that’s used to treat skin concerns via collagen production. Also known as collagen induction therapy, this treatment may help those looking to reduce the appearance of acne scars and stretch marks.

It’s also used in certain anti-aging procedures, such as eyelid surgery and sun spots. Microneedling isn’t effective for hair loss, despite the possible role of collagen in hair growth.