Boxcar scars are caused by long-term, inflammatory acne, but their formation will depend on how skin heals during and after acne treatment. These scars form when the body does not produce enough collagen during the healing process, causing the inflamed lesion to sink deeper into the skin.

Do boxcar scars go away?

Boxcar scars will not heal on their own. However, they may fade over time. Treatment for boxcar scars can reduce their appearance. Sometimes, though, very deep boxcar scars remain visible even after treatment.

Do indented scars fill in over time?

In most cases, acne scars do improve over time without treatment. That's particularly true of discoloration. Indentations may be more stubborn and less prone to disappearing on their own.