Or would it be safer to go with a less potent solution multiple times or try derma stamping? I'm particularly bothered by the latest ones nearest the nose on the front right side of my face. They're a few weeks old, feels a bit raised underneath, and was the result of a giant cystic pimple which depressingly left 4 ice pick scars relatively close together. I'm concerned if it's too large for TCA Cross? Is there a general rule about the size and depression + strength of TCA to use? Ethnicity: Asian