Just curious (no, I do not plan on using any acid on me *LOL*)... Does another acid, applied topically, like, say glycolic acid in a high concentration, applied in the manner TCA is applied (with toothpick, etc.)... help with collagen regeneration in some "visible" way? Or, given a pitted or depressed scar, no glycolic acid concentration can have that effect because it does not get to scar the scar, so to speak??