When acne breakouts penetrate the skin deeply, they damage the skin and the tissue beneath it. As the acne clears, the body tries to repair this damage.
During the healing process, the body produces collagen — a substance that gives the skin support. If the body produces too little or too much collagen, you will see a scar.
The type of scar depends on how much collagen your body makes.
Depressed acne scars: If the body produces too little collagen, depressions or pits form as the skin heals.
Raised acne scars: Sometimes the body produces too much collagen as it tries to heal the skin and underlying tissue. When this happens, a person develops a raised acne scar. This type of acne scar is more common in people who have skin of color like African Americans, Hispanics, and Asians.
Even when we do our best to prevent acne scars, some people scar. There are many treatment options, which can significantly diminish depressed and raised acne scars.