Acne scarring can be extremely damaging to one’s self-esteem. We have treated hundreds of patients with acne scars over the years. For ice-pick scars (tiny deep holes), we recommend CROSS using 100% TCA applied in a pinpoint manner directly into the scar. Rolling scars (depressed valleys with gentle edges) can be dramatically improved with subcision, using a needle to undermine and raise the scar. Boxcar scars (craters) can be surgically excised or can be treated with lasers, including fractional CO2 laser. The key ingredient when treating acne scars is patience. Multiple treatments, done repeatedly and on a consistent basis, will get the job done.