Acne scars can be significantly improved, but the right approach depends entirely on what type of scar you’re dealing with. Shallow scars may respond to at-home topical treatments over several months, while deeper scars typically require professional procedures like laser resurfacing, microneedling, or subcision. Most people see meaningful improvement with a combination of treatments rather than a single solution.
Identify Your Scar Type First
Not all acne scars are the same, and treatments that work well for one type can be ineffective for another. Acne scars fall into two broad categories: atrophic scars (indented) and hypertrophic or keloid scars (raised). The vast majority of acne scars are atrophic, meaning the skin lost tissue during healing and now sits below the surrounding surface. Within that category, there are three distinct shapes.
Icepick scars are narrow, deep, V-shaped pits less than 2 mm wide that extend deep into the skin. They look like the skin was punctured with a sharp instrument. These are the most stubborn type to treat because of their depth and narrow opening.
Boxcar scars are wider, round or oval depressions with sharp vertical edges, similar to chickenpox scars. Think of them as U-shaped. They can be shallow (less than half a millimeter deep) or significantly deeper, and the depth matters when choosing a treatment.
Rolling scars are typically wider than 4 to 5 mm and create a wave-like, undulating texture across the skin. They’re caused by bands of fibrous tissue pulling the surface of the skin down toward deeper layers. This tethering effect is what gives the skin its uneven, shadowed appearance.
Keloid and hypertrophic scars are the opposite problem. Instead of losing tissue, the skin overproduced collagen during healing. Keloids appear as firm, reddish-purple nodules that grow beyond the borders of the original breakout. They require a completely different treatment strategy, often involving steroid injections or silicone sheeting to flatten the excess tissue.
What Topical Treatments Can Do
Topical products are the most accessible starting point, but expectations matter. They work best on shallow scarring and discoloration. They won’t fill in deep icepick or boxcar scars, but they can smooth texture, boost collagen in the upper layers of skin, and fade the dark or red marks that acne leaves behind (which are technically post-inflammatory changes, not true scars).
Retinoids are the strongest topical option for scar remodeling. They increase collagen production in the skin, reduce fine texture irregularities, and speed up cell turnover. Prescription-strength tretinoin (available in concentrations from 0.01% to 0.1%) has the most evidence behind it for improving skin texture and stimulating new collagen. Over-the-counter retinol products, typically at 0.1% to 0.3% concentration, offer a milder version of the same effect. Either way, you’ll need to use them consistently for at least 12 weeks before judging results, and sun protection is essential while using any retinoid.
Other helpful topicals include vitamin C serums (which support collagen synthesis and fade pigmentation), azelaic acid (which targets dark marks), and niacinamide. These are supporting players rather than primary scar treatments, but they can make a noticeable difference for mild, shallow scarring and discoloration.
Fractional Laser Resurfacing
Fractional CO2 laser treatment is one of the most effective options for moderate to severe atrophic scarring. The laser creates microscopic columns of controlled damage in the skin while leaving surrounding tissue intact. This triggers the body’s wound-healing response, generating new collagen and essentially rebuilding the scarred area from within.
A typical treatment plan involves about four monthly sessions. In clinical studies, patients saw roughly a 33% objective improvement in scar severity after a full course, with subjective satisfaction scores improving by nearly 50%. That gap between clinical measurement and patient perception is common: the improvement often feels more dramatic than what a grading scale captures because the skin’s overall texture and light reflection change.
Expect 5 to 10 days of downtime per session. The skin will be red, swollen, and peeling during that window. The average cost per session is around $1,829, according to the American Society of Plastic Surgeons, though prices vary significantly by location and provider. Full results continue developing for months after your last session as collagen remodeling progresses beneath the surface.
Radiofrequency Microneedling
Radiofrequency (RF) microneedling combines tiny needles with heat energy delivered into the deeper layers of skin. The needles create controlled micro-injuries, and the radiofrequency current generates small zones of heat that stimulate new collagen and elastin production. Studies show increased levels of both type I and type II procollagen and elastin in treated skin.
This treatment works particularly well for rolling and boxcar scars. Icepick scars respond less reliably to microneedling alone because of their narrow, deep structure. RF microneedling is also a strong option for darker skin tones (Fitzpatrick types III through V), which carry a higher risk of pigmentation changes with some laser treatments.
Sessions are spaced about four to six weeks apart, with most people completing three to four treatments. Downtime is shorter than with ablative lasers, usually a few days of redness and mild swelling.
Subcision for Rolling Scars
If your scars have that wave-like, tethered appearance, subcision targets the root cause. A provider inserts a small instrument beneath the skin to physically cut the fibrous bands pulling the surface downward. Once those bands are released, the skin lifts. The controlled injury also triggers new connective tissue growth that fills the space underneath, and fat beneath the skin redistributes more evenly.
Subcision is especially effective for rolling scars because it directly addresses the structural problem causing them. Downtime is minimal, roughly 2 to 3 days, though bruising can last longer. Many providers combine subcision with fillers or microneedling in the same session for better results. Studies consistently show high patient satisfaction with these combination approaches.
TCA Cross for Icepick Scars
Icepick scars are notoriously difficult, but there’s a targeted technique designed specifically for them. TCA cross involves applying a high concentration of trichloroacetic acid (a chemical agent) directly into each individual scar using a fine applicator like a toothpick tip. The acid causes controlled destruction inside the narrow scar tract, which then heals with new collagen filling the space from the bottom up.
In a clinical study using this technique at the highest concentration, 8 out of 10 patients achieved more than 70% improvement in their icepick scars, with the remaining two patients seeing 50% to 70% improvement. Treatments are typically done every two weeks for four sessions. Downtime is about 5 to 7 days per session, during which small white spots appear at each treated scar before crusting and healing.
This is a precision treatment. It’s not applied across the entire face like a chemical peel. Each scar is treated individually, making it ideal for scattered icepick scars that wouldn’t respond well to broader resurfacing.
Dermal Fillers for Volume Loss
When acne scarring involves significant volume loss beneath the skin, injectable fillers can restore that lost structure. Hyaluronic acid fillers provide immediate volume and stimulate some collagen production, with results lasting up to 18 months. For longer-lasting correction, stimulatory fillers made from poly-L-lactic acid work by gradually triggering your own collagen production over time, with effects lasting two to three years. Calcium hydroxyapatite fillers offer both instant volume and ongoing collagen stimulation for up to 18 months.
Fillers work well for broad, shallow depressions and rolling scars. They’re often combined with subcision: the provider releases the tethered bands, then injects filler to prevent them from reattaching and to add volume simultaneously.
Matching Treatments to Your Scars
The most effective approach for most people is a combination strategy tailored to their specific scar types. Here’s a practical framework:
- Shallow discoloration and mild texture: Start with retinoids and sun protection. Give it three to six months.
- Rolling scars: Subcision (possibly with filler), followed by RF microneedling or fractional laser to refine texture.
- Boxcar scars: Fractional CO2 laser or RF microneedling. Shallow boxcar scars respond well; deeper ones may need multiple modalities.
- Icepick scars: TCA cross first to raise the base of the scar, then laser or microneedling to smooth the surface.
- Keloid or raised scars: Steroid injections, silicone sheets, or specialized laser treatments designed to flatten excess tissue.
Realistic Timelines and Expectations
Collagen remodeling is a slow biological process. Even after your final treatment session, improvement continues for months as new collagen matures and organizes beneath the skin. Most people notice gradual changes after the initial healing period, with peak results appearing several months later.
No treatment eliminates acne scars completely. The realistic goal is significant improvement, not perfection. Most professional treatments achieve 50% to 70% improvement in scar appearance, which in practice can be transformative for how the skin looks and feels. Severe scarring often benefits from a staged approach over 6 to 12 months, combining different treatments that each target a different aspect of the damage. Your provider can assess your specific scar types and build a plan that sequences treatments for the best cumulative result.