Acne scars can fade significantly with the right treatments, but the best approach depends on the type of scar you’re dealing with. Some scars respond well to simple topical products you can use at home, while deeper or more textured scars typically need professional procedures. Most people see meaningful improvement through a combination of methods rather than any single fix.
Identifying Your Scar Type
Acne scars fall into two broad categories: indented (atrophic) scars, where tissue was lost, and raised (hypertrophic or keloid) scars, where the body overproduced collagen during healing. Most acne scars are indented, and they come in three varieties.
Ice pick scars are the most common type, making up 60 to 70 percent of atrophic acne scars. They’re narrow, V-shaped, and extend deep into the skin. Think of the mark a thin, sharp object would leave. Boxcar scars are the next most common: wider, round or oval depressions with defined edges, almost like a shallow crater. Rolling scars are broad with sloping edges that give the skin a wavy, uneven texture. If you stretch the skin and the scar flattens out, it’s likely a rolling scar.
Keloid scars are raised, firm, and often grow larger than the original breakout. They show up most frequently along the jawline, chest, and upper back. Keloids require a completely different treatment strategy than indented scars.
Topical Treatments You Can Start at Home
For mild scarring and dark marks left behind after breakouts (called post-inflammatory hyperpigmentation), topical products can make a real difference over time. They won’t erase deep textural scars, but they can smooth the skin’s surface and even out discoloration.
Tretinoin (a prescription retinoid) speeds up skin cell turnover, encouraging new skin growth at the scar site. Start with a low concentration, around 0.025 percent, and increase gradually as your skin adjusts. Results take months of consistent use, and you’ll need sunscreen daily since retinoids make your skin more sun-sensitive.
Vitamin C serums work on a predictable timeline. Skin brightness improves within the first one to two weeks. Uneven pigmentation typically starts fading after four to eight weeks. By six to eight weeks, dark spots may appear reduced by roughly 15 to 20 percent. Maximum results, including smoother texture and significantly improved pigmentation, show up after 12 or more weeks of daily use.
Niacinamide pairs well with vitamin C and supports skin barrier health, which helps healing skin retain moisture and resist further damage. Both ingredients are available over the counter in serums and moisturizers.
Microneedling for Moderate Scars
Microneedling uses a device covered in fine steel needles to create controlled micro-injuries in the skin, triggering your body’s natural wound-healing response and boosting collagen production. For acne scars, needles typically range from 1.5 to 2 mm in length, penetrating into the upper layer of the dermis. Deep scars occasionally call for 2.5 to 3 mm needles, while delicate areas like around the eyes use shorter 0.5 to 1 mm needles.
Professional microneedling is more effective than at-home dermarollers, which use shorter needles and can’t reach the depth needed for scar remodeling. Most people need multiple sessions spaced four to six weeks apart. In one clinical trial comparing microneedling to 35 percent glycolic acid peels, both improved acne scars over six months, but combining microneedling with a glycolic acid peel produced better results than either treatment alone, improving both scar depth and overall skin texture.
Laser Resurfacing
Fractional CO2 laser treatment is one of the more effective options for moderate to severe acne scars. The laser removes thin columns of damaged skin while leaving surrounding tissue intact, which speeds healing and stimulates collagen production in the treated areas.
For mild scarring, expect two to four sessions with minimal downtime of about two to four days per treatment. Severe acne scars typically need three to five sessions spaced several months apart. After each session, redness and flaking generally subside within three to five days, though you should avoid makeup for seven to ten days until the skin fully heals. Results build gradually with each treatment rather than appearing all at once.
Subcision for Tethered Scars
Rolling scars and some boxcar scars are “tethered,” meaning fibrous bands beneath the skin pull the surface downward. Subcision addresses this directly. A dermatologist inserts a small needle beneath the scar and moves it back and forth to break those anchoring fibers, releasing the skin so it can rise to a more level surface.
In a study of 40 patients with rolling acne scars, 90 percent reported visible improvement after subcision, though the scars weren’t completely erased. Subcision works especially well when combined with other treatments like microneedling or fillers, since freeing the tethered skin allows those follow-up treatments to be more effective.
Dermal Fillers for Volume Loss
When acne scars create noticeable depressions, injectable fillers can restore lost volume and bring the skin closer to its original level. This works best for rolling scars and wider boxcar scars.
Hyaluronic acid fillers are the most common choice. They provide immediate results but are temporary, typically lasting 6 to 24 months before the body absorbs the material. Poly-L-lactic acid fillers stimulate your own collagen production and can last over two years. For a longer-term option, polymethyl-methacrylate (PMMA) fillers are semi-permanent, with results lasting up to five years. The trade-off with longer-lasting fillers is that they’re harder to reverse if you’re unhappy with the result.
Chemical Peels
Chemical peels use acid solutions to remove damaged outer layers of skin, prompting regeneration. For acne scars, glycolic acid peels at concentrations around 35 percent are common in clinical settings, with stronger concentrations (up to 70 percent) used for more aggressive treatment. Trichloroacetic acid (TCA) is another option, sometimes applied directly into individual ice pick scars using a technique called CROSS, where the acid is precisely placed to rebuild collagen from the bottom of the scar upward.
Peels are best suited for shallow scars and pigmentation issues. Deep ice pick scars rarely respond well to peels alone. Multiple sessions are needed, and you’ll experience peeling and redness for several days after each treatment.
Treating Raised and Keloid Scars
Raised scars need the opposite approach from indented ones. Instead of building collagen, the goal is to flatten excess tissue. Silicone gel sheets are a first-line, non-invasive option. In clinical studies, wearing silicone sheets for at least four hours daily produced significant reductions in both scar thickness and redness for hypertrophic scars and keloids. Scar color scores dropped meaningfully on a standardized scale, shifting from red or deep red toward pink or normal skin tone.
For keloids that don’t respond to silicone, dermatologists can inject corticosteroids directly into the scar tissue to soften and flatten it. Severe keloids sometimes require surgical removal, though there’s a risk the keloid will return, which is why surgery is often paired with follow-up injections or radiation therapy to prevent regrowth.
Protecting Results With Sunscreen
UV exposure stimulates pigment production in healing skin, which can darken acne marks and undo the progress of any treatment you’re using. Daily sunscreen with at least SPF 30 is essential during any scar treatment regimen. For proper protection, you need about a quarter teaspoon of sunscreen for your face alone. Reapply every two hours if you’re outdoors, and avoid peak sun hours when possible. This single habit can be the difference between scars that fade steadily and scars that stubbornly linger.