Acne scarring improves with the right combination of treatments, but the best approach depends on what type of scars you have and how deep they go. Some scars respond well to topical products you can use at home, while others need professional procedures that physically remodel the skin beneath the surface. Most people see meaningful improvement, though it typically takes months rather than weeks because the skin needs time to build new collagen and restructure itself.
Know Your Scar Type First
Not all acne scars are the same, and treatments that work beautifully on one type can be ineffective on another. Acne scars fall into two broad categories: indented scars (where tissue was lost) and raised scars (where the body overproduced collagen during healing).
Indented scars come in three varieties. Ice pick scars are small, narrow holes that point deep into the skin, most common on the cheeks. Boxcar scars are wider depressions with sharp, defined edges, typically found on the lower cheeks and jaw where skin is thicker. Rolling scars have sloping edges at varying depths, giving the skin a wavy, uneven texture. Of the three, rolling scars tend to respond best to a wide range of treatments, while ice pick scars are the most stubborn because of how deep and narrow they are.
Raised scars include keloids, which grow beyond the boundaries of the original breakout, and hypertrophic scars, which stay within the original wound area. These require a completely different treatment strategy, often involving steroid injections or silicone sheeting rather than the resurfacing techniques that work on indented scars.
Topical Treatments for Mild Scarring
If your scarring is relatively shallow, topical retinoids are the most evidence-backed option you can start at home. Retinoids speed up cell turnover and stimulate collagen production in the upper layers of skin. A Johns Hopkins study found that a prescription-strength adapalene gel, applied daily for 24 weeks, improved skin texture and atrophic scarring in at least 50% of subjects by investigator assessment. Patients themselves reported improvement at even higher rates, over 80%.
The catch is that retinoids work slowly and primarily help with shallow, broad scars rather than deep ones. You’ll need consistent use for several months before texture changes become noticeable. Over-the-counter retinol products are weaker than prescription formulas, so expect a longer timeline with those. Other topical ingredients like azelaic acid and vitamin C can help fade the dark marks left behind by acne (called post-inflammatory hyperpigmentation), but these discoloration patches aren’t true scars and are easier to treat.
Microneedling and RF Microneedling
Microneedling creates tiny punctures in the skin using fine needles, triggering the body’s wound-healing response and prompting new collagen production. It works well for mild to moderate scarring, particularly rolling scars and shallow boxcar scars. Downtime is minimal, usually a day or two of redness.
RF (radiofrequency) microneedling takes this a step further by delivering heat energy through the needles into deeper layers of skin. This dual action, mechanical injury plus thermal energy, produces significantly more collagen than standard microneedling alone. The heat softens the fibrotic strands that tether scars to deeper tissue, which is why RF microneedling is particularly effective for rolling and atrophic scars. Results continue improving for several months after each session as new collagen matures and integrates into the skin’s structure.
Most people need a series of three to four sessions, spaced about four to six weeks apart. The results from RF microneedling also tend to last longer than traditional microneedling because the deeper tissue remodeling creates more durable structural changes.
Laser Resurfacing
Fractional CO2 lasers are one of the most effective tools for moderate to severe acne scarring. They work by vaporizing tiny columns of damaged skin, leaving surrounding tissue intact so healing happens faster. As the skin repairs itself, new collagen fills in depressed scars from below.
For mild scarring, one to two sessions may be enough. Severe scarring typically requires three to five sessions spaced several months apart. Gentler fractional settings involve just two to four days of downtime, while more aggressive treatments can mean a week or more of redness and peeling. The average cost of laser skin resurfacing is around $1,829 per session, according to the American Society of Plastic Surgeons, though prices vary widely depending on the area treated and the intensity of the procedure.
Milder fractional lasers produce more subtle, gradual results. More aggressive settings deliver more dramatic improvement per session but come with longer recovery. Your provider will balance these trade-offs based on your scar severity and how much downtime you can manage.
Targeted Procedures for Stubborn Scars
Subcision for Rolling Scars
Rolling scars look the way they do because fibrous bands underneath the skin pull the surface downward, like tiny anchors. Subcision addresses this directly. A needle is inserted beneath the scar and moved back and forth to sever those tethering bands. Once the bands are cut, the skin is free to rise back to a more level surface, and the wound-healing response deposits new collagen in the space below. Subcision is often combined with other treatments like filler or microneedling for a more complete result.
TCA CROSS for Ice Pick Scars
Ice pick scars are too narrow and deep for most resurfacing treatments to reach effectively. TCA CROSS is a technique designed specifically for them. A high concentration of trichloroacetic acid (70 to 100%) is carefully deposited directly into the base of each individual scar, triggering a controlled wound-healing response that builds collagen from the bottom up. Patients can expect a one to two grade improvement in their scars over a six-month period. Multiple sessions are usually needed, and this technique works best when combined with broader resurfacing for surrounding skin texture.
Dermal Fillers
For deep, individual scars that create noticeable shadows on the skin, injectable fillers can provide immediate volume. Bellafill is the only FDA-approved filler specifically indicated for acne scars, and it typically lasts around 12 months. Other fillers are sometimes used off-label. Fillers work best for broad, rolling depressions rather than narrow ice pick scars, and they’re often paired with other procedures for a comprehensive approach.
Why Results Take Months
Almost every effective acne scar treatment relies on the same underlying biological process: controlled injury that triggers new collagen production. Understanding the timeline helps set realistic expectations.
In the first 30 days after a procedure, the body is in recovery mode. The initial injury activates fibroblasts, the cells responsible for making collagen. Between days 30 and 60, collagen synthesis ramps up and new fibers begin forming to replace damaged tissue. The most visible transformation happens between days 60 and 90, when collagen fully matures and integrates into the skin’s deeper structure. Real improvement typically starts becoming noticeable around four to six weeks, with major changes appearing at the two to three month mark.
This is why providers space treatment sessions months apart. Each session builds on the collagen your body produced from the previous one, and rushing the process doesn’t produce better results.
Combining Treatments for Best Results
Most dermatologists take a multimodal approach to acne scarring, meaning they combine different treatments rather than relying on just one. A typical plan for someone with mixed scar types might start with subcision to release tethered rolling scars, follow with a series of RF microneedling or fractional laser sessions to improve overall texture, and use TCA CROSS to target individual ice pick scars. Topical retinoids can be used between procedures to support ongoing collagen production.
The total timeline for a comprehensive treatment plan is usually six months to a year, sometimes longer for severe scarring. Improvement is cumulative. You won’t see a dramatic change after a single session, but the difference between your starting point and where you are after a full course of treatment can be substantial. Taking clear, well-lit photos before you begin is the most reliable way to track progress, since changes happen gradually enough that you may not notice them day to day.