TCA Cross
Medically reviewed: Dr. Murat Toktamışoğlu · 2026-05-21
Definition
Trichloroacetic acid 50-100% spot injection into acne scar. Triggers fibrosis to fill atrophic scar.
Detail
Most effective for ice pick and narrow boxcar. Wooden stick or sharp tip into scar only. 4-6 sessions 4-6 weeks apart. 7-14 day crust. PIH risk.