Deep acne scars can be significantly improved, but they rarely disappear completely with a single treatment. The most effective approach combines professional procedures targeting the structure beneath the scar with consistent at-home care that supports collagen rebuilding over months. Results depend heavily on correctly identifying your scar type, because different scars respond to different treatments.
Identifying Your Scar Type
Not all deep acne scars are the same, and the distinction matters more than most people realize. Treatments that work well for one type can be nearly useless for another. There are three main types of depressed (atrophic) acne scars:
- Ice pick scars are small, narrow indentations that point sharply downward into the skin, like a puncture. They’re most common on the cheeks and are the hardest type to treat because of their depth relative to their tiny opening.
- Boxcar scars are broader depressions with sharp, well-defined edges, almost like a miniature box pressed into the skin. They tend to form on the lower cheeks and jaw, where skin is thicker.
- Rolling scars have sloping edges and varying depth, giving the skin a wavy, uneven texture. These scars are caused by fibrous bands pulling the skin surface downward from underneath.
Many people have a mix of all three. A dermatologist can map your scars and recommend a treatment plan tailored to the specific types present on your skin.
Subcision for Tethered Scars
Rolling scars and some boxcar scars are “tethered,” meaning fibrous tissue underneath the skin pulls the surface downward like a tent stake. Subcision directly addresses this by breaking those bands. A needle is inserted beneath the scar and moved in a fan-like motion to cut through the fibrous strands anchoring the scar to deeper tissue. As those bands release and the wound heals, new collagen fills the space and lifts the depressed area.
Subcision works best on rolling scars and depressed scars that flatten out when you stretch the surrounding skin. It’s generally not effective for deep ice pick scars, which have a different structure. Many people need two or three sessions spaced several weeks apart, and it’s often combined with other treatments like filler injections or laser resurfacing to maximize the lift.
Laser Resurfacing
Fractional CO2 lasers are one of the most studied treatments for deep acne scars. They work by creating thousands of tiny columns of controlled injury in the skin, leaving surrounding tissue intact. This triggers the skin to produce new collagen as it heals, gradually filling and smoothing depressed scars.
The word “fractional” is key. Older lasers removed the entire skin surface, which meant long recovery and higher risk. Fractional lasers treat only a fraction of the skin at a time, which speeds healing while still reaching deep enough to remodel scar tissue. Downtime typically involves redness, swelling, and peeling that lasts one to three weeks for more intensive sessions.
Radiofrequency microneedling offers comparable scar improvement to fractional CO2 lasers, with milder side effects and a shorter recovery period. In clinical comparisons, about 95% of patients reported being satisfied or very satisfied with their results from either approach. The RF microneedling side showed less redness and pigment changes at the one- and two-month marks, making it a strong option for people who can’t afford extended downtime or who have skin prone to discoloration.
Treating Ice Pick Scars
Ice pick scars are the most stubborn type because they’re narrow and extend deep into the skin. Lasers and microneedling alone often can’t reach the bottom of these scars effectively. Two techniques work better here.
TCA CROSS involves applying a high concentration of trichloroacetic acid directly into each individual scar using a toothpick or fine applicator. The acid triggers a controlled chemical injury at the base of the scar, prompting collagen production that gradually fills the narrow channel from the bottom up. Multiple sessions, usually three to six spaced a month apart, are needed.
Punch excision is a minor surgical technique where each ice pick scar is individually cut out with a small circular tool, and the tiny wound is closed with a stitch or skin adhesive. The resulting fine line scar is typically much less noticeable than the original pit. For very deep ice pick scars, this is sometimes the most direct path to improvement.
What Recovery Actually Looks Like
Surface healing and true scar improvement happen on very different timelines, and confusing the two is one of the main reasons people feel disappointed early on. After most procedures, the visible downtime (redness, peeling, crusting, sensitivity) lasts anywhere from a few days to two or three weeks, depending on intensity. Your skin may look “healed” at that point, but the real work is just beginning underneath.
Collagen remodeling starts a few weeks after treatment and continues for six to twelve months. Results are best judged around three to six months post-treatment, not in the mirror the week after. This is why dermatologists space sessions apart and why patience matters more than intensity. Doing too many aggressive treatments too close together can cause more harm than benefit.
Most people need three to six treatment sessions over the course of several months to a year to see meaningful improvement in deep scars. Improvement of 50 to 70 percent is a realistic expectation for most scar types with a well-designed treatment plan. Complete elimination of deep scars is uncommon, but the texture difference can be dramatic enough that scars are no longer visible at conversational distance.
At-Home Care That Supports Results
Topical retinoids are the most evidence-backed at-home treatment for supporting scar remodeling. Tretinoin strongly stimulates the production of collagen and improves the organization of newly formed collagen bundles. Prescription tretinoin is available in concentrations from 0.01% to 0.1%, with most dermatologists starting scar patients at 0.025% or 0.05% and adjusting based on tolerance.
Adapalene (available over the counter at 0.1%) is a gentler alternative that also promotes collagen remodeling, though less aggressively than tretinoin. Either way, retinoids take months of consistent nightly use to show results on scarring. They also make skin more sensitive to the sun, so daily sunscreen becomes non-negotiable.
Sunscreen itself plays a direct role in scar healing. UV exposure stimulates pigment production in healing skin and can darken scar tissue, making scars more visible even as their texture improves. A broad-spectrum SPF 30 or higher, applied daily, protects the results of both professional treatments and retinoid use.
Risks for Darker Skin Tones
Post-inflammatory hyperpigmentation, where treated skin develops dark patches, is a real concern for anyone with medium to dark skin (Fitzpatrick skin types III through VI). It’s a universal skin response, but it’s significantly more common and more persistent in darker skin. Aggressive laser treatments and certain chemical peels carry the highest risk.
This doesn’t mean darker skin tones can’t treat acne scars effectively. Radiofrequency microneedling tends to cause less pigment disruption than ablative lasers. Lower-energy laser settings, longer intervals between sessions, and pre-treatment with pigment-suppressing agents can all reduce the risk. The key is working with a provider experienced in treating deeper skin tones, because the wrong settings or technique can leave you with pigmentation problems that are harder to fix than the original scars.
Cost and Planning
Professional acne scar treatment is a financial commitment. Ablative laser resurfacing averages around $2,500 per session with a plastic surgeon, while non-ablative laser treatments average about $1,445. Dermatologists’ fees range more broadly, from $400 to $2,500 per session depending on the type and extent of treatment. Microneedling sessions start around $300. Subcision is often comparable to microneedling in cost per session.
Since most deep scar treatment plans involve multiple sessions and sometimes combining different procedures, total costs commonly reach $3,000 to $8,000 or more over the full course of treatment. Insurance rarely covers scar treatment because it’s classified as cosmetic. Some practices offer payment plans, and spacing sessions over several months naturally spreads costs. Starting with the highest-impact procedure for your specific scar type, rather than trying everything at once, is the most cost-effective approach.