Acne scars result from more severe forms of acne, notably cystic acne. People who pick or squeeze their acne can cause additional damage to their skin, which causes an even stronger inflammatory response. According to many studies, prolonged inflammation is linked to more extensive scarring. Therefore, it is important for patients to refrain from touching their blemishes to prevent further scarring down the line.

The three most common types of acne scars are ice pick, boxcar, and rolling scars. These scars have one thing in common: they all dip below the level of surrounding healthy skin due to the depletion of collagen. Because of this, with certain lighting, these dipped scars can cast noticeable shadows on the face and be aesthetically displeasing.