Acne scarring can be significantly improved with the right combination of treatments, but the best approach depends on what type of scars you have. Some scars respond well to at-home topical products over several months, while deeper scars need professional procedures like laser resurfacing, microneedling, or subcision. Most people see meaningful improvement, though complete elimination is rare. Results also take patience: collagen remodeling continues for up to 12 to 18 months after treatment.
Why Scar Type Matters
Not all acne scars are created equal, and treatments that work beautifully on one type can be ineffective on another. Acne scars fall into three main categories based on their shape and depth.
Ice pick scars are narrow, deep pits less than 2 mm wide that extend deep into the skin in a V shape. They look like someone poked the skin with a sharp instrument. Because they’re so narrow and deep, surface-level treatments like microdermabrasion barely touch them.
Boxcar scars are round or oval depressions with sharp vertical edges, similar to chickenpox scars. They range from 1.5 to 4 mm in diameter and can be shallow (under half a millimeter deep) or deep. Their U-shaped profile with a wide, flat base makes them more responsive to resurfacing treatments than ice pick scars.
Rolling scars are the widest type, usually over 4 to 5 mm across. They’re caused by bands of scar tissue pulling the skin surface downward from underneath, creating a wave-like, undulating texture. Stretching the skin often makes them temporarily disappear, which is a quick way to identify them.
Many people have a mix of all three types, which is why dermatologists often recommend combining treatments rather than relying on a single approach.
Topical Retinoids for Mild Scarring
If your scars are relatively shallow, a prescription-strength retinoid can produce noticeable improvement without any procedures. In a clinical study of adapalene 0.3% gel used over 24 weeks, the average number of atrophic scars in the treated area dropped from 18.7 to 11.8. More than half of participants showed a one- or two-grade improvement in overall scar severity, and nearly 89% of participants reported their scars had improved by the end of treatment.
Retinoids work by increasing the thickness of the outer skin layer and stimulating collagen production in the deeper layers. The tradeoff is time. You’ll need to use the product consistently for at least six months to see meaningful results, and improvement is gradual. Over-the-counter retinol products are weaker than prescription-strength options but can still help with very mild texture irregularities.
Laser Resurfacing
Laser treatments are among the most effective options for moderate to severe acne scarring. They fall into two broad categories, and the choice between them involves a tradeoff between results and recovery time.
Ablative fractional lasers (typically CO2 lasers) vaporize tiny columns of damaged skin, triggering the body to replace it with new, smoother tissue. In clinical studies, 62% of patients treated with fractional CO2 laser achieved more than 50% improvement in their scars. About one in five patients saw greater than 75% improvement. Recovery involves roughly five days of crusting, scaling, and redness.
Non-ablative fractional lasers heat the tissue beneath the surface without removing the outer skin layer. They’re gentler, with an average downtime of about two days of redness. The tradeoff is less dramatic results: about 45% of patients achieve more than 50% improvement. You’ll typically need more sessions to match what ablative lasers accomplish in fewer.
Costs vary widely. Non-ablative treatments average around $1,445 per session, while ablative resurfacing runs closer to $2,500. Most people need two to five sessions spaced several weeks apart.
Microneedling and Radiofrequency
Microneedling uses a device covered in fine needles to create thousands of tiny punctures in the skin. This controlled injury triggers your body’s wound-healing response, producing new collagen and elastin that gradually fills in depressed scars. It works well for boxcar and rolling scars and is generally safe across all skin tones.
Radiofrequency microneedling takes this a step further by delivering heat energy through the needles into the deeper skin layers. This combination can increase skin thickness by over 40%. In one study, patients who received five treatments at 30-day intervals saw an average 72% improvement in scar grading and 67% improvement in skin texture. Sessions start around $300 for standard microneedling, with radiofrequency versions costing more.
Plan on three to five sessions spaced about a month apart. Full results take eight to 12 months to appear because collagen builds slowly. Some practitioners recommend waiting up to 18 months before deciding whether additional sessions are needed.
Subcision for Rolling Scars
Rolling scars are unique because the visible depression is caused by fibrous bands pulling the skin downward from below. Subcision directly addresses this by breaking those tethering bands. A needle is inserted beneath the scar and moved in a fan-like motion to release the fibrotic strands anchoring the skin to deeper tissue. This allows the surface to lift, and new connective tissue forms during healing to maintain that lift.
Subcision is particularly effective for rolling scars that don’t respond well to surface treatments alone. It’s often combined with other procedures like fillers or microneedling for better results. The procedure itself costs around $200 or more and is relatively simple, though bruising in the treated area is common for a week or two afterward.
Dermal Fillers
For individual deep scars, injectable fillers can restore lost volume almost immediately. Hyaluronic acid fillers are the most common option. They’re temporary, lasting up to 18 months before the body gradually absorbs them, which means repeat treatments are needed to maintain results. Sessions typically cost $600 to over $1,000.
For a longer-lasting option, Bellafill is the only FDA-approved filler specifically indicated for moderate to severe atrophic acne scars. It contains tiny synthetic microspheres that the body can’t break down, suspended in a collagen carrier. The microspheres act as a permanent scaffold, and over time the body builds its own collagen around them. Because the results are permanent, precision matters. A skin test for collagen sensitivity is required before treatment.
Chemical Peels and the CROSS Technique
Standard chemical peels at around $400 per session can improve overall skin texture and shallow scarring. For deep ice pick scars, a more targeted approach called the CROSS technique is often more effective. This involves applying a high concentration of trichloroacetic acid (TCA) directly into individual scars rather than across the whole face. The acid causes a controlled injury at the base of the scar, stimulating collagen production that gradually raises the depressed area.
Concentrations of 70% to 100% TCA are used. Higher concentrations produce more collagen stimulation but also longer healing times, with extended crusting compared to the lower concentration. Multiple sessions are typically needed, spaced several weeks apart. The CROSS technique is especially useful for narrow, deep ice pick scars that don’t respond well to lasers or microneedling.
Special Considerations for Darker Skin
If you have a darker skin tone, post-inflammatory hyperpigmentation is a real risk with many scar treatments, particularly lasers. The key principles for reducing this risk include using longer wavelength lasers (such as the 1064 nm Nd:YAG), larger spot sizes, and the lowest effective energy settings. Longer wavelengths penetrate deeper into the skin and are less likely to be absorbed by melanin in the outer layers, which is what triggers unwanted darkening.
Pre-treating the skin with a topical retinoid and daily sunscreen for several weeks before any procedure helps speed skin healing afterward and reduces both the severity and duration of any pigmentation changes. Strict sun avoidance before and after treatment is essential. Microneedling (without a laser component) is generally considered one of the safer procedural options for darker skin tones because it doesn’t target pigment at all.
Combining Treatments for Best Results
Because most people have a mix of scar types, the best outcomes come from layering treatments. A common approach might start with subcision to release tethered rolling scars, follow with a series of microneedling or laser sessions to improve overall texture and stimulate collagen, and use targeted CROSS applications on stubborn ice pick scars. Fillers can address any remaining deep depressions that don’t fully respond to collagen-building treatments.
The total investment depends on how many treatments you need and which combination you pursue. A mild case treated primarily with microneedling might run $900 to $1,500 over three to five sessions. A more complex case involving laser resurfacing, subcision, and fillers could reach $5,000 to $10,000 or more over the course of a year. Most insurance plans consider acne scar treatment cosmetic and don’t cover it, though it’s worth checking with your carrier if scarring is severe.
Whatever combination you choose, patience is essential. Collagen remodeling is a slow biological process. The full result of any collagen-stimulating treatment takes 8 to 12 months to appear, and some practitioners recommend waiting up to 18 months before concluding that a treatment hasn’t worked. Taking standardized photos in the same lighting at regular intervals is the most reliable way to track your progress, since day-to-day changes are too subtle to notice in the mirror.