Acne scars can be significantly improved, but the right approach depends on the type of scar you have and how deep it goes. Shallow scars may respond to topical treatments over several months, while deeper pitted or raised scars typically need professional procedures, often in combination. Most treatment plans take 6 to 12 months to show final results.
Identifying Your Scar Type
Acne scars fall into two broad categories: depressed (sunken into the skin) and raised (built up above the skin surface). Knowing which type you have narrows down your treatment options considerably.
Depressed scars, called atrophic scars, come in three forms. Ice pick scars are small, narrow indentations that point downward into the skin like a puncture. Boxcar scars are broader, box-like depressions with sharp, defined edges. Rolling scars vary in depth and have sloping edges that give the skin a wavy, uneven texture. Most people with acne scarring have a mix of all three.
Raised scars form when the body overproduces scar tissue during healing. Hypertrophic scars stay within the boundaries of the original breakout, while keloid scars grow beyond the original spot and can continue expanding. Raised scars are more common on the chest, back, and jawline, and they require a different treatment strategy than depressed scars.
Topical Treatments for Mild Scarring
For shallow scars and discoloration, consistent use of the right topical products can make a visible difference over time. Two ingredients have the strongest evidence behind them: retinoids and vitamin C.
Retinoids (the most effective being prescription tretinoin) work by thickening both the outer and deeper layers of skin, stimulating the cells responsible for producing collagen, and activating growth factor pathways that lead to mature collagen formation. They also slow down the enzymes that break collagen apart, giving your skin a better chance to rebuild structure in scarred areas. Over-the-counter retinol is a weaker version of the same compound, so results take longer, but it’s a reasonable starting point if you haven’t used retinoids before.
Vitamin C serums, specifically those containing L-ascorbic acid, serve as a building block for collagen production and protect existing collagen from breaking down. They’re particularly helpful for the reddish or brownish marks left behind after breakouts, which are discoloration rather than true scars. Look for concentrations between 10 and 20 percent for meaningful results. These products work best as part of a long-term routine rather than a quick fix, and daily sunscreen is essential alongside them since UV exposure worsens both discoloration and scar appearance.
Microneedling and Radiofrequency Microneedling
Microneedling creates thousands of tiny, controlled punctures in the skin using fine needles. This triggers the body’s wound-healing response, stimulating new collagen and elastin production that gradually fills in depressed scars. It works well for rolling and shallow boxcar scars.
Standard professional microneedling runs $200 to $700 per session, with most falling in the $300 to $400 range. Radiofrequency microneedling adds heat energy delivered through the needles to boost collagen remodeling deeper in the skin. It’s more effective for moderate scarring but costs $600 to $1,200 per session. Most treatment plans involve three to six sessions spaced four to six weeks apart.
At-home microneedling devices ($30 to $200) exist, but they use shorter needles and produce far less collagen stimulation than professional treatments. They may help topical products absorb better, but they won’t meaningfully improve established scars on their own. There’s also a real risk of infection or worsening scars if technique or hygiene is off.
Laser Resurfacing
Lasers are among the most effective tools for acne scarring, and they come in two main types. Ablative lasers (like fractional CO2) vaporize thin layers of damaged skin and trigger deep collagen remodeling. Non-ablative lasers heat the tissue beneath the surface without removing skin, producing a milder response with less downtime.
In clinical comparisons, both types produce statistically significant improvement in scar appearance. The collagen production between ablative CO2 and non-ablative approaches is surprisingly similar (around 38 to 40 percent increases in collagen density in studied areas). However, patients in one study were three times more likely to report satisfaction with the non-ablative treatment, likely because recovery was easier. Three sessions spaced one month apart is a common protocol for either type.
The tradeoff is downtime. Non-ablative treatments involve 2 to 7 days of early recovery, while CO2 laser resurfacing can mean one to two weeks of redness, swelling, crusting, and peeling before you’re comfortable in public. Stronger settings require longer healing. For people with darker skin tones, non-ablative options or lower-energy settings are generally preferred because aggressive ablative lasers carry a higher risk of causing pigmentation changes.
TCA CROSS for Deep Ice Pick Scars
Ice pick scars are notoriously resistant to lasers and microneedling because they’re so narrow and deep. The most targeted treatment for them is TCA CROSS, a technique where a high concentration (70 to 100 percent) of trichloroacetic acid is deposited directly into individual scars. The acid causes controlled destruction at the base of each scar, prompting the body to rebuild tissue from the bottom up.
This isn’t a one-and-done treatment. Patients can expect a one to two grade improvement in scar severity over about six months, with multiple sessions needed. It’s often combined with other treatments (like laser resurfacing for surrounding boxcar or rolling scars) as part of a broader plan.
Treating Raised Scars
Hypertrophic and keloid scars require the opposite strategy from depressed scars. Instead of building tissue, the goal is breaking down excess scar tissue. Steroid injections into the scar are the most common first-line approach, flattening raised tissue over a series of visits. Silicone sheets or gels worn consistently over weeks can also soften and flatten hypertrophic scars.
Keloids are more stubborn and have a tendency to return after treatment. They often require a combination of steroid injections with other methods like cryotherapy (freezing the tissue) or specialized laser treatments that target blood vessels feeding the scar. If you’re prone to keloids, this is important to communicate before any procedure, since some scar treatments for depressed scars could trigger new keloid formation.
Realistic Timelines and Costs
Collagen remodeling is slow. Even after a single procedure, the full results won’t be visible for months because new collagen continues forming well after the skin’s surface has healed. Most treatment series take 3 to 9 months to complete, and mixed scarring (the most common scenario) often requires a staged plan running 6 to 12 months. If you’re working toward a specific event like a wedding or professional photos, start at least 6 to 9 months beforehand.
Costs add up. A typical microneedling series of four sessions runs $1,200 to $2,800. A laser resurfacing series can range from $1,500 to over $5,000 depending on the type and number of sessions. Adding platelet-rich plasma (PRP) to a microneedling session increases the cost by $200 to $400, and post-treatment skincare products can add another $50 to $150. Insurance rarely covers acne scar treatment since it’s classified as cosmetic.
Preventing New Scars
The most effective anti-scarring strategy is treating active acne early and aggressively. Inflammatory breakouts, especially deep cysts, cause the tissue damage that leads to permanent scarring. The longer inflammation persists, the more likely it is to leave a mark. Picking at breakouts dramatically increases scarring risk, even after the skin has otherwise healed.
The red or brown marks left after a pimple heals are not true scars. Post-inflammatory redness and pigmentation fade on their own over weeks to months, and the process speeds up with vitamin C, sunscreen, and retinoids. True scars involve a change in skin texture, not just color, and those won’t resolve without intervention.