The best acne-scar treatment depends on what is actually left behind after the acne heals. Rolling scars are usually tethered below the skin and often need subcision or another treatment that releases that tethering. Ice-pick scars are narrow and deep, so focal techniques such as TCA CROSS or punch procedures may make more sense than broad resurfacing alone. Shallow boxcar scars can respond to fractional laser, microneedling, or radiofrequency microneedling, while deeper boxcar scars may need a more targeted procedure first. Flat red or brown post-acne marks are not true scars and should be treated as discoloration rather than structural depressions.
Key Takeaways
- Identify the scar type before choosing the device. Rolling, boxcar, ice-pick, and raised scars do not respond equally to the same treatment.
- Flat red or brown marks after acne are often post-inflammatory color changes, not structural scars.
- Active acne should be controlled before aggressive scar treatment so new inflammation does not keep creating new scars.
- Combination treatment is often useful because many patients have more than one scar type, but more procedures are not automatically better.
- Skin tone and history of post-inflammatory hyperpigmentation should influence laser, peel, and energy settings.
How do you know which acne-scar treatment fits your scars?
Start with classification rather than a device name. Atrophic scars involve loss of collagen and sit below the surrounding skin. They are usually described as rolling, boxcar, or ice-pick scars. Raised hypertrophic or keloid scars behave differently because they involve excess scar tissue rather than a depression.
A large review of acne-scar morphology describes rolling scars as broad depressions caused by fibrous tethering, boxcar scars as round or oval depressions with relatively sharp edges, and ice-pick scars as narrow, deep tracts.
The same principle applies to post-acne redness and pigmentation. A flat brown mark can look like a scar in photographs but may be post-inflammatory hyperpigmentation. A flat red mark may be post-inflammatory erythema. Those concerns can overlap with true scars, but they require different treatment targets.
| What you see | What is happening | Treatment discussion may include |
|---|---|---|
| Rolling depressions | Fibrous bands tether the skin downward | Subcision, sometimes followed by filler, microneedling, RF microneedling, or resurfacing |
| Shallow boxcar scars | Broader depression with defined edges | Fractional laser, microneedling, RF microneedling, selected peels or combination treatment |
| Deep boxcar scars | Deeper sharply edged tissue loss | Punch elevation or excision, focal treatment, then resurfacing when appropriate |
| Ice-pick scars | Narrow deep tracts extending into the dermis | TCA CROSS, punch techniques, selected combination treatment |
| Raised scars | Excess scar tissue above the skin | Scar-specific treatment such as injections, silicone, laser, or other approaches depending on diagnosis |
| Flat red or brown marks | Vascular or pigment change without a structural depression | Diagnosis-driven pigment or redness treatment rather than scar remodeling alone |
1. Are these true acne scars or post-acne marks?
This is the first distinction because it changes the entire treatment plan. True atrophic acne scars create changes in skin contour. When side lighting hits the face, they cast shadows because the surface is depressed or tethered.
Post-inflammatory hyperpigmentation is different. It creates flat brown, gray, or darker discoloration after inflammation. Post-inflammatory erythema creates persistent pink or red marks. These color changes may occur on top of a scar, but they can also exist without any permanent textural scar.
The Adonis HALO vs BBL guide explains why texture, pigment, and vascular redness should not be treated as interchangeable targets. A fractional resurfacing treatment may help texture while a pigment- or vascular-focused device may be more relevant to flat discoloration.
If your main concern disappears when the skin is stretched flat and the issue is mostly color, the discussion may be very different from a patient with fixed depressions.
2. Why are rolling scars often treated with subcision?
Rolling scars are commonly held down by fibrous attachments beneath the skin. Resurfacing the top layer without releasing those deeper bands may improve texture but leave the main depression in place.
A 2023 review of subcision clinical trials found subcision to be effective for selected atrophic scars and noted that it is often combined with fillers, microneedling, or radiofrequency-based treatments. The procedure works mechanically by releasing the strands that tether the scar downward.
Subcision is not automatically needed for every depressed scar. It is most logical when tethering is a major part of the defect. Bruising, swelling, tenderness, lumps, pigment change, and other complications can occur, so technique and patient selection matter.
Some rolling scars also have surface texture that remains after tethering is released. That is why subcision may be only one stage of a broader treatment plan.
3. What works differently for ice-pick scars?
Ice-pick scars are narrow at the surface but extend deeply into the dermis. Their depth makes them less responsive to broad superficial resurfacing than shallow scars.
One targeted option is TCA CROSS, in which high-concentration trichloroacetic acid is placed precisely into individual scars to stimulate focal remodeling. A 2026 review of TCA CROSS found that it has been used primarily for ice-pick and boxcar scars, with improvement across multiple sessions and pigment change among the more common adverse effects.
Punch excision or punch elevation may also be considered for selected deep scars. These procedures trade one type of scar for a more controlled surgical wound, so the goal is not scar-free skin. The goal is to convert a deep, difficult-to-resurface defect into something that can heal more favorably or respond better to later resurfacing.
Key point: an aggressive full-face laser is not necessarily the most aggressive treatment of the deepest scar. Sometimes a very focal procedure is better matched to the anatomy.
4. When do fractional CO2 laser and RF microneedling make sense?
Fractional CO2 laser and microneedling radiofrequency both create controlled injury that stimulates remodeling, but they deliver that injury differently. Fractional CO2 uses ablative laser columns. RF microneedling places needles into the skin and delivers radiofrequency energy at selected depths.
A 2026 meta-analysis of eight randomized trials found greater acne-scar improvement with fractional CO2 compared with microneedling RF, but CO2 was also associated with more pain, longer erythema, and a higher risk of post-inflammatory hyperpigmentation in the included studies. That is a trade-off, not a universal winner.
For patients worried about CO2 recovery, the Adonis guide to CO2 laser downtime provides a separate recovery discussion. Microneedling also has its own adverse-effect profile, including redness, swelling, infection risk, pigment change, and rare scarring; see the Adonis guide to microneedling side effects.
Neither treatment should be selected solely because it is newer, more aggressive, or marketed as having less downtime. Scar depth, skin tone, prior pigment response, treatment settings, and acceptable recovery all matter.
5. What about ordinary microneedling?
Conventional microneedling creates controlled mechanical micro-injuries without delivering radiofrequency energy. It has clinical evidence for atrophic acne scars and may be reasonable for selected rolling and boxcar patterns, particularly when a lower-energy approach is preferred.
Microneedling does not release deep tethering the way subcision does and does not selectively destroy an ice-pick tract the way CROSS can.
It is also important to distinguish medical microneedling from shallow cosmetic needling. Treatment depth, sterility, device quality, operator training, and aftercare influence both outcome and risk.
6. Does skin tone change the acne-scar treatment plan?
Yes. More epidermal melanin can increase the risk of post-inflammatory hyperpigmentation after procedures that create significant heat or inflammation. That does not mean darker skin cannot be treated with lasers or energy devices. It means settings, device choice, preparation, and aftercare need more attention.
A 2026 network meta-analysis of 56 randomized trials involving 1,488 patients found that multiple laser, microneedling, chemical, subcision, filler, and combination strategies can improve moderate-to-severe atrophic acne scars. The authors also found no single intervention that solved every outcome best. Different combinations performed differently depending on the outcome measured.
The newer evidence reinforces a practical rule: the treatment should be individualized to scar morphology and skin characteristics rather than selected from a universal ranking. Patients with a strong history of hyperpigmentation may reasonably accept a slower or staged approach to reduce pigment risk.
7. Should active acne be treated before the scars?
Usually, scar treatment works best when active inflammatory acne is under reasonable control. Treating old scars while new cysts or nodules continue forming can create a cycle in which new scars develop during the treatment course.
Active acne can also change which procedures are appropriate at a given time. Aggressive resurfacing over inflamed or infected lesions may increase irritation or other complications. Acne control and scar treatment can overlap in selected cases, but the sequence should be deliberate.
Patients who still have frequent inflammatory breakouts may benefit from dermatologic acne management before committing to an expensive multi-session scar plan.
8. Do fillers help acne scars?
Fillers can elevate selected depressed scars, particularly when there is volume loss or a broad depression that improves when lifted. They are often used after subcision so the released area is supported while healing occurs.
They are not equally useful for every scar. A narrow ice-pick scar is not fundamentally a volume-loss problem. A tethered rolling scar may not stay elevated if the fibrous bands are not released first. A filler can therefore be a useful component without being the main treatment.
Duration varies by product and location, and repeat treatment may be needed. Filler risks, including vascular complications, must also be discussed separately from laser or microneedling risks.
When is combination treatment better than one procedure?
Combination treatment makes the most sense when the patient has mixed scar anatomy. One face may contain tethered rolling scars, shallow boxcar scars, a few deep ice-pick scars, and residual pigmentation at the same time.
The treatment sequence can then target different problems in stages. For example, tethered scars may be released first, focal deep scars treated separately, and broader textural resurfacing performed later. Pigment or redness may be addressed only after inflammation settles.
This does not mean combining everything at one visit. More inflammation can increase recovery burden and pigment risk. Sometimes the most sophisticated plan is a staged plan.
What results are realistic from acne-scar treatment?
Improvement is a more realistic goal than complete removal. Even strong treatment can leave some residual depth, color difference, or texture. Improvement depends on scar type, severity, skin tone, treatment intensity, and healing.
Before-and-after photos should be viewed under similar lighting because side lighting can dramatically exaggerate or hide depressions. Ask what treatments the patient received and how long after the final session the image was taken.
Also ask which scars are expected to respond least. A useful treatment plan should identify limitations before treatment begins rather than describing every scar as equally treatable.
How should you decide where to start?
Start with three questions: Is active acne controlled? Are the remaining concerns true structural scars or mainly red and brown marks? Which scar type is dominant?
If rolling tethered scars dominate, subcision may become central. If ice-pick scars dominate, focal chemical or punch techniques may deserve more attention. If shallow boxcar and surface texture dominate, resurfacing or microneedling may have a larger role. If pigmentation is the main issue, the Adonis hyperpigmentation guide is a more relevant starting point than a scar-remodeling procedure.
A treatment plan should also account for skin type, previous pigment problems, tolerance for downtime, budget, and how many treatment stages are realistic. The device should come after those decisions, not before them.
Honest limitation: photographs and online descriptions cannot reliably determine scar depth, tethering, skin thickness, pigment risk, or whether a lesion is a true scar. Proper treatment selection requires examination under consistent lighting and often palpation or skin stretching.
Frequently Asked Questions
What is the best treatment for acne scars?
There is no single best treatment for every acne scar. Rolling scars may need subcision, ice-pick scars may respond to focal techniques such as TCA CROSS, and shallow boxcar scars may respond to fractional laser, microneedling, or RF microneedling. Mixed scars often require staged combination treatment.
Can acne scars be completely removed?
Complete removal should not be promised. Most treatments aim to reduce depth, soften edges, improve texture, or make scars less noticeable. Residual scarring is common even after a strong response, especially when scars are deep or several scar types are present.
Are dark acne marks the same as acne scars?
No. Flat brown or gray marks are usually post-inflammatory hyperpigmentation, while flat red marks may be post-inflammatory erythema. They can occur together with true scars, but they are color changes rather than permanent depressions in the skin.
Is CO2 laser better than RF microneedling for acne scars?
A 2026 meta-analysis found greater average scar improvement with fractional CO2 in the included trials, but CO2 also produced more pain, longer redness, and more post-inflammatory hyperpigmentation. The better choice depends on scar type, skin tone, risk tolerance, and acceptable downtime.
Does subcision work for all acne scars?
No. Subcision is most relevant when depressed scars are tethered by fibrous bands, particularly rolling scars. It is less logical for narrow ice-pick scars or flat pigmentation. Some patients combine subcision with filler, microneedling, RF, or resurfacing for different scar components.
How many acne-scar treatments will I need?
There is no universal number. Treatment count depends on scar type, severity, procedure intensity, skin response, healing, and the degree of improvement you want. Deep mixed scars often require several sessions or more than one treatment method rather than one aggressive procedure.
Start with scar classification, not a device name
Acne-scar treatment is often nonsurgical and may be managed in dermatology or medical-aesthetics settings. When a scar may require surgical revision or a more complex procedural assessment, the surgical team at Adonis Plastic Surgery can evaluate whether a surgical approach belongs in the plan and explain appropriate next steps.
Request a ConsultationReferences
- Laser, Microneedling, and Combination Therapies for Moderate to Severe Atrophic Acne Scars: Systematic Review and Network Meta-Analysis
- Fractional CO2 Laser Versus Microneedling Radiofrequency for Post-Acne Scarring: Meta-Analysis of Randomized Trials
- Subcision in Acne Scarring: A Review of Clinical Trials
- TCA CROSS for Atrophic Scars: Review of Techniques, Adjuncts, and Complications
Adonis Plastic Surgery is located at 2557 Pacific Coast Highway in Torrance, California, serving patients across the South Bay including Redondo Beach, Palos Verdes Estates, Manhattan Beach, San Pedro, Long Beach, El Segundo, Carson and Gardena.
