If laser, peels and microneedling haven't fixed your deep ice-pick scars, TCA CROSS is likely what you've been missing.
"CROSS" stands for Chemical Reconstruction of Skin Scars. It uses high-concentration trichloroacetic acid (typically 70–100%) applied to the base of individual ice-pick scars with a fine wooden applicator. Each treated scar develops a controlled microinjury, which triggers collagen remodelling. Distinct from face-wide peels, the process targets only the scars.
TCA CROSS targets ice-pick scars where other treatments fail. total ige blood test rolling and shallow boxcar scars but is limited on ice-pick. Laser covers boxcar and rolling well but isn't ideal for deep ice-pick. The majority of patients with active scarring need a combination plan.
Most patients need 4–6 TCA CROSS sessions, spaced 4–6 weeks apart. Per-session improvement is around 10–25%, stacking improvement across the whole course.
Realistic before-and-afters show 30–70% improvement in ice-pick scar depth. Complete clearance isn't realistic. The realistic goal is to reduce shadow and texture so scars become unnoticeable.
Each treated scar shows a small white frost immediately, then a brown crust over 5–10 days. Don't pick — let it shed naturally. Daily SPF 50 isn't optional — to prevent post-inflammatory hyperpigmentation, especially in skin of colour.
Contraindications include active breakouts, recent Roaccutane, pregnancy or breastfeeding, and keloid history.
Acne scarring is rarely one type — ice-pick, boxcar and rolling often coexist. A medical assessment identifies which scar types you have and the right treatment combination. Schedule a consultation at https://drderme.com/treatment/tca-cross-acne-chem