Subcision is a minimally invasive treatment designed to address depressed scars, such as acne scars. It involves using a specialized needle to cut the fibrous bands beneath the scar, which pull the skin down and cause the depression. This process stimulates the production of new collagen, improving the appearance of the scar over time and restoring skin smoothness and elasticity. The procedure is typically performed under local anesthesia, with mild swelling or bruising that resolves quickly.