Boxcar scars are round or oval depressions with steep, sharply defined walls — like small craters pressed into the skin. They form when inflammatory acne destroys collagen and the skin heals with a flat-bottomed, vertical-sided pit, most often on the cheeks and temples.

Because the walls are defined and the base is broad, boxcar scars respond best to energy-based remodelling that rebuilds collagen in and around the crater. RF microneedling is the first-line workhorse; shallower boxcars also improve with microneedling and resurfacing.

Dr Azra Vaziri grades boxcar depth in Dubai and matches the plan accordingly. Boxcar scars sit within the wider acne scar treatment menu — compare all types in the scar-type guide.

Boxcar scars get their name from their shape: a broad, flat base with steep, near-vertical walls, like the outline of a boxcar rail wagon. They range from shallow (under about 0.5 mm) to deep, and depth is the single biggest factor in choosing treatment — shallow boxcars resurface readily, while deep ones need energy that reaches the full height of the wall.

How to recognise them: unlike rolling scars, boxcar edges are sharp and do not slope; unlike narrow ice pick scars, the opening is wide relative to its depth. Stretching the skin does not flatten a true boxcar scar, because the tissue is genuinely lost rather than tethered.

Boxcar scars need collagen rebuilt within the crater walls. Energy-based remodelling leads, with resurfacing and — for tethered or very deep scars — release or elevation added as needed.

RF Microneedling (Potenza)

Insulated needles deliver radiofrequency energy to the full depth of the boxcar wall, driving collagen remodelling that softens the edges and lifts the base. The most reliable treatment for moderate to deep boxcar scars, and safe for all skin types.

Sessions: 3–4, spaced 4–6 weeks apart

Microneedling & Resurfacing

Shallow boxcar scars respond well to Dermapen microneedling and medical peels, which resurface the top layers and smooth the wall edges over a course. Often combined with exosomes for faster recovery.

Sessions: 4–6, spaced 3–4 weeks apart

Subcision

Some boxcar scars have a bound-down base. Where the base is tethered, subcision releases it first so the RF microneedling that follows can lift and remodel the crater more completely.

Role: release a tethered base before remodelling

Biostimulators & Boosters

Collagen biostimulators and skin boosters improve overall skin density and quality between resurfacing sessions, helping the treated area hold its result.

Role: skin quality and long-term support

1. Grading — boxcar depth is assessed, since shallow and deep scars follow different plans. Active acne is controlled first.
2. Energy-led plan — RF microneedling leads for moderate–deep scars; microneedling and peels handle shallow ones; subcision is added if the base is tethered.
3. Recovery — 2–5 days of redness after RF microneedling; 1–3 days for lighter work. Sun protection is essential in the UAE.
4. Progressive result — walls soften and the base lifts gradually over 3–4 sessions as collagen remodels across several months.