Final answer:
Dermabrasion is the procedure that treats acne scarring by removing the outer layers of the skin and allowing new skin to grow. Other treatments like microdermabrasion, chemical peels, and laser resurfacing are also options for treating acne scarring but work differently.
Step-by-step explanation:
Dermabrasion is the procedure that treats acne scarring by removing outer layers of the skin. Dermabrasion involves the use of a rotating device with a rough surface to scrape away the top layer of skin, allowing new skin to grow in its place. This procedure can help improve the appearance of acne scars by smoothing out the skin's texture.
Other options listed, such as microdermabrasion, chemical peels, and laser resurfacing, also treat acne scarring but in different ways. Microdermabrasion uses a less aggressive device to exfoliate the skin, chemical peels involve applying a chemical solution to peel off the outer layer of skin, and laser resurfacing uses laser technology to remove damaged skin cells.