Types of Acne Scars: Ice Pick, Boxcar and Rolling
There are three main types of atrophic acne scar: ice pick scars are narrow and deep with a V-shaped point, boxcar scars are round or oval with sharp vertical walls, and rolling scars are wide and shallow with sloping edges that give skin an undulating look. Flat brown or red marks are not scars at all β they fade on their own.
The only scar you can reliably fix is the one you prevent
Scarring follows deep, long-lived inflammation β so clearing active acne early and protecting healing skin from sun is the highest-value thing you can do. Our Daily Clear Routine pairs the Acne Relief Face Wash, the 2% Salicylic Acid Serum and SPF 50 sunscreen as one three-step system.
Explore the Daily Clear Routine βKnowing which type you have matters, because the treatments genuinely differ β a procedure that reliably improves rolling scars does very little for ice pick scars, and vice versa. It also matters because a great many people treating "scars" do not have scars at all.
First: is it actually a scar?
A scar is a change in the skin's structure. If you look at the area in raking side light β a window to one side, rather than straight-on bathroom light β a true scar casts a shadow, because the surface is no longer flat. A flat mark does not.
Flat marks are far more common than scars and go by two names. Post-inflammatory hyperpigmentation is the brown or grey-brown mark left after a spot, and it is the usual outcome on Indian skin. Post-inflammatory erythema is the pink or red mark, more common on lighter skin. Both fade β over months, and faster with daily sunscreen. Neither needs a laser. Our guide to red marks vs dark marks after acne covers the distinction, and acne marks vs acne scars sets out how to tell which you are dealing with.
What are the three types of atrophic acne scar?
Atrophic β depressed β scars account for the large majority of acne scarring. They form when inflammation destroys collagen and the repair leaves a deficit.
Ice pick scars
Narrow, typically under 2mm across, and deep β they taper to a point that can extend well into the dermis, like a puncture. They are most common on the cheeks and are the hardest type to treat, because their depth is disproportionate to their surface width. Resurfacing the surface does not reach the base.
Boxcar scars
Round or oval depressions, roughly 1.5 to 4mm wide, with sharply defined vertical walls and a flat base β like a small crater. They can be shallow or deep, and they most often sit on the cheeks and temples. Because the base is flat and reachable, they respond better to resurfacing than ice pick scars do.
Rolling scars
Wider, usually 4 to 5mm or more, shallow, with gently sloping edges and no sharp border. They give skin a soft, wavy, undulating appearance that is most obvious in angled light. Their cause is different from the other two: fibrous bands tether the skin down to the tissue beneath, pulling the surface into a dip. That mechanism is why the treatment differs.
And the raised kind
Hypertrophic and keloid scars sit above the skin rather than below it, and result from excess collagen during healing. They are much more common on the jawline, chest, shoulders and back than on the face, and they need dermatological management.
How do treatments differ by scar type?
| Scar type | Shape | What dermatologists typically use |
|---|---|---|
| Ice pick | Narrow, deep, V-shaped | TCA CROSS, punch excision |
| Boxcar | Sharp vertical walls, flat base | Fractional laser, punch elevation, fillers |
| Rolling | Wide, sloping, tethered | Subcision to release the tethers, then microneedling or RF microneedling |
| Hypertrophic / keloid | Raised | Intralesional steroid, silicone, laser |
Subcision illustrates the point well. It works by passing a fine needle beneath a rolling scar to cut the fibrous bands holding it down, letting the skin lift. On an ice pick scar there is nothing to release, so it achieves very little. Most people have a mixture of types, which is why dermatologists usually combine procedures across several sessions rather than repeating one.
Can any cream remove acne scars?
No, and it is worth being direct about it. No topical product rebuilds lost dermal collagen in a way that fills an atrophic scar. Products promising to "remove" scars are describing what they do to flat marks, which would have faded anyway.
What topicals genuinely do: retinoids stimulate collagen slowly and can modestly soften the appearance of shallow scars over many months of consistent use. Niacinamide, sunscreen and brightening actives fade the pigmentation that sits over and around scars, which often makes them substantially less noticeable even though the depression itself is unchanged. That is a real, worthwhile result β just not the same thing as removal.
For genuine atrophic scars, the effective options are procedural and belong with a dermatologist.
How do you stop scars forming in the first place?
Scarring correlates with how deep the inflammation goes and how long it lasts. That gives you three levers.
- Treat active acne early and consistently. Nodular and cystic acne carries the highest scarring risk, and delay is the strongest predictor of poor outcomes. If over-the-counter treatment is not controlling it within a couple of months, see a dermatologist rather than waiting it out.
- Do not pick or squeeze. Extracting a deep spot pushes inflammatory contents further into the dermis and converts something that would have healed cleanly into something that will not. Our guide to what actually works on a pimple overnight covers the alternatives.
- Wear sunscreen daily. It does not prevent the scar itself, but UV darkens post-inflammatory pigmentation and prolongs it considerably β which is what makes a healing area look worse for longer.
A steady three-step routine β a salicylic acid cleanser, a correctly dosed leave-on acid, and daily SPF β addresses all three levers at once, which is why it outperforms an intensive treatment used sporadically.
Frequently asked questions
Do acne scars fade over time?
True atrophic scars do not meaningfully fade β they are structural. The pigmentation over them fades, which is why scars often look better after a year even when the depression is unchanged.
Does microneedling work on all scar types?
It works best on rolling and shallow boxcar scars. It does relatively little for ice pick scars, whose depth it cannot reach. Professional microneedling goes considerably deeper than home derma rollers, which carry infection and injury risk without much benefit.
How long after acne clears should you treat scars?
Generally once acne is well controlled β treating scars while new inflammatory lesions keep forming means treating a moving target. Most dermatologists want acne stable first, and will wait around six months after a course of isotretinoin before resurfacing.
Are acne scars more common on Indian skin?
Scarring risk relates to inflammation depth rather than skin tone, but deeper skin tones develop far more prominent post-inflammatory pigmentation, which makes scarring look worse and can complicate laser treatment. Choosing a dermatologist experienced with skin of colour matters.
Can you fix ice pick scars at home?
No. Ice pick scars need procedures such as TCA CROSS or punch excision, both of which involve precisely controlled injury to the base of the scar. Attempting either at home risks a far larger scar than the one you started with.