The location of these scars often makes them difficult to eradicate. A surgical scar revision may narrow them, but do not expect them to disappear. Other modalities of treatment like laser will probably not improve them. See a local plastic surgeon for advise.
There are a few clinically proven scar reduction methods. Many involve lasers or injections. One clinicaly proven treatment that is available OTC is ScarAway. It is available as a patch or strip and safely reduces scars. For facial scars like acne, use ScarAway Serum. Very effective, although the patches (often referred to as silicone scar sheets) are most effective so use them when feasible, and serum only when you cannot use the strip in the area. Silicone scar sheets lke this are often used after scar revision surgery to minimize the risk of problem scarring.