Acne scars can be significantly improved, though the best approach depends on what type of scar you’re dealing with. Shallow discoloration left behind after a breakout often fades on its own within months. True scars, the ones that change the texture of your skin, require more targeted treatment and a longer timeline. The good news: most people see meaningful improvement with the right combination of at-home care and professional procedures.
Know Your Scar Type First
Not all acne scars respond to the same treatments, so identifying what you have saves time and money. Acne scars fall into two broad categories: indented (atrophic) and raised (hypertrophic).
Indented scars form when your skin doesn’t produce enough collagen during healing, leaving a depression. These come in three varieties:
- Ice pick scars: Deep and narrow, like a small puncture in the skin. These are the hardest to treat because they extend deep into the dermis.
- Boxcar scars: Broad depressions with sharp, defined edges, almost like a shallow crater.
- Rolling scars: Wide depressions with sloping, rounded edges that give the skin an uneven, wave-like texture.
Hypertrophic scars are the opposite: thickened, raised tissue that sits above the skin’s surface. These form when your body overproduces collagen during healing and are more common on the chest, back, and jawline.
Flat dark or red marks left after a pimple heals aren’t technically scars. They’re post-inflammatory hyperpigmentation (dark spots) or post-inflammatory erythema (red marks), and they respond well to simpler treatments.
What You Can Do at Home
Topical retinoids are the strongest at-home option for acne scars. They work by stimulating your skin to produce new collagen, particularly the types (collagen I and III) that rebuild skin structure. Retinoids also help organize newly formed collagen into more normal patterns, which gradually smooths out depressions. In a 24-week study, adapalene at 0.3% concentration improved skin texture by one to two grades in over half of patients. Prescription-strength options like tazarotene and trifarotene have also shown significant scar reduction over similar timeframes.
The key word here is patience. You’re looking at a minimum of three to six months of consistent nightly use before visible changes. Some people continue to see improvement up to 12 months in. Retinoids also make your skin more sun-sensitive, which matters for the next point.
Daily sunscreen with at least SPF 30 is non-negotiable during scar treatment. UV exposure triggers extra melanin production, which darkens existing marks. Research suggests UV rays can slow the fading of dark spots by 30 to 50%. If you’re investing in any scar treatment, skipping sunscreen effectively undermines your results.
Professional Microneedling
Microneedling uses tiny needles to create controlled micro-injuries in the skin, triggering your body’s wound-healing response and new collagen production. For acne scars, professional treatments use needle depths of 1.5 to 2.5 mm, much deeper than at-home dermarollers, which is why clinical results are significantly better.
Most people need three to four sessions spaced four to six weeks apart. Deeper scars, particularly boxcar and ice pick types, often require six to eight sessions. The procedure is well-tolerated with topical numbing, and downtime is typically a day or two of redness. Microneedling works best for rolling and shallow boxcar scars, where boosting collagen in the upper layers of skin can visibly lift the depression.
Laser Resurfacing
Fractional laser treatments are among the most effective single interventions for acne scars. These lasers create microscopic columns of damage in the skin, leaving surrounding tissue intact so healing is faster. Your body replaces the treated tissue with fresh, smoother skin.
Fractional CO2 lasers, the most studied type for acne scars, deliver impressive results. In clinical comparisons, patients saw a median improvement of 61 to 67% in their overall scar scores. Some patients achieved even higher improvement, with the top quartile reaching nearly 89%. Side effects are mild for most people: redness and swelling that resolve within one to three days, with occasional temporary darkening of the skin. Multiple sessions, usually two to four spaced several weeks apart, produce the best outcomes.
Laser treatments work well across scar types but are especially effective for widespread, shallow-to-moderate scarring. Darker skin tones carry a higher risk of post-treatment pigmentation changes, so finding a provider experienced with your skin tone matters.
TCA CROSS for Deep Ice Pick Scars
Ice pick scars are notoriously stubborn because they’re narrow and deep, making them poor candidates for surface-level treatments. TCA CROSS is a technique designed specifically for these scars. A provider deposits a small amount of highly concentrated trichloroacetic acid (70 to 100%) directly into the base of each individual scar, triggering a controlled chemical injury that stimulates collagen production from the bottom up.
The realistic expectation is a one to two grade improvement over six months, typically requiring multiple sessions. TCA CROSS won’t make deep ice pick scars vanish completely, but it can raise the base of the scar enough that subsequent treatments like microneedling or laser become more effective. It’s often used as a first step in a multi-treatment plan.
Subcision for Rolling Scars
Rolling scars have a specific structural problem: fibrous bands of scar tissue beneath the surface literally pull the skin downward, creating that wave-like unevenness. Subcision directly addresses this. A provider inserts a needle beneath the scar and moves it to break those tethering bands. You can sometimes hear a snapping sound as the fibers release.
Once those anchoring strands are cut, the skin is free to rise back to a more level surface. The blood that pools beneath the skin after the procedure also acts as a natural spacer, helping prevent the bands from reattaching. Subcision is frequently combined with other treatments for better results. Microneedling can be performed as soon as the next day, and it pairs well with fractional laser, acid peels, or TCA CROSS depending on the scar types present.
Dermal Fillers for Immediate Volume
Injectable fillers offer the fastest visible improvement for depressed scars. Hyaluronic acid fillers are the most common choice because they’re adjustable and reversible. The filler is injected directly beneath individual scars to physically raise the depression to the level of surrounding skin.
Results are essentially immediate, but they’re temporary. Most hyaluronic acid fillers last six to 12 months before the body gradually breaks them down, meaning you’ll need repeat treatments to maintain the results. Fillers work best for rolling scars and broader boxcar scars. They’re a good option if you want noticeable improvement for a specific event or want to see what your skin could look like before committing to more permanent procedures.
Combining Treatments Gets the Best Results
Most dermatologists treat acne scars with a combination approach rather than relying on a single method. A common strategy starts with subcision to release tethered rolling scars, followed by microneedling or fractional laser to stimulate collagen across the broader area, with TCA CROSS targeting any remaining deep ice pick scars individually. Topical retinoids run throughout as a baseline treatment that supports collagen remodeling between procedures.
The full timeline for a multi-treatment plan is typically six to 12 months. Improvements continue even after your last session as new collagen matures and remodels over the following weeks and months. Setting realistic expectations matters: most treatment combinations produce noticeable, meaningful improvement, but complete elimination of deep scars is uncommon. The goal is smoother texture and reduced visibility, not flawless skin, and for most people that improvement is significant enough to change how they feel about their appearance.