Well, acne scars don't necessarily heal on their own. It depends on the depth of the acne scars.
If they are relatively superficial, in the shallow layer of the skin, they can self - repair.

However, if they involve the deep layer of the skin below the dermis, they generally can't be repaired, and there will always be a pit left there in the future.
So, whether acne scars can be repaired or not still depends on the depth of your acne scars and can't be generalized.
