Microneedling is a minimally-invasive cosmetic procedure that is used to treat skin concerns via collagen production. This treatment may help reduce the appearance of acne scars and stretch marks. It is also used in certain anti-aging procedures, such as eyelid surgery and sun spots. Microneedling works by encouraging the skin to make more collagen, a protein in the body. It’s normal for the skin to lose collagen during ageing. The pricking encourages the skin to make new tissue and this results in more collagen production to help make the skin firmer.