Acne scars can be significantly improved, but the right approach depends on what type of scarring you have and how deep it goes. No single treatment erases all acne scars completely. Most people see the best results from a combination of professional procedures, sometimes paired with consistent topical care at home. Before spending money on any treatment, the first step is figuring out whether you’re dealing with actual scars or temporary marks, because the two require very different strategies.
Flat Marks vs. True Scars
Many people searching for scar removal are actually looking at post-inflammatory marks that haven’t faded yet. These are flat, discolored spots left behind after a breakout heals. They sit at the skin’s surface and don’t involve any change in texture. True acne scars, by contrast, create visible dents or raised bumps because the skin’s deeper structure has been damaged.
There are two types of flat marks. Post-inflammatory erythema (PIE) shows up as red or pink patches caused by damaged blood vessels beneath the skin. Post-inflammatory hyperpigmentation (PIH) appears brown, gray, or black and happens when inflammation triggers excess melanin production. A quick way to tell them apart: PIE is more common in lighter skin tones and looks vascular (red/pink), while PIH is more common in darker skin tones and looks pigmented (brown/dark).
PIE responds to ingredients that calm blood vessels and reduce redness: vitamin C, niacinamide, and azelaic acid. PIH responds to ingredients that slow melanin production and speed cell turnover: retinoids, alpha hydroxy acids, and vitamin C. Both types fade on their own over months to years, but targeted products can cut that timeline considerably. Daily sunscreen is non-negotiable for either type, since UV exposure darkens both kinds of marks and stalls healing.
Types of Acne Scars
True acne scars fall into a few distinct categories, and each responds differently to treatment. The three main types of depressed (indented) scars are ice pick, boxcar, and rolling scars.
- Ice pick scars are narrow, deep, V-shaped pits that look like the skin was punctured with a sharp instrument. They’re the hardest to treat because they extend deep into the dermis.
- Boxcar scars are wider with sharp, defined edges, like a small crater. They can be shallow or deep.
- Rolling scars create a wave-like, uneven texture. They’re caused by fibrous bands pulling the skin downward from underneath, which gives the surface a soft, undulating appearance.
Some people also develop raised papular scars, which are small, skin-colored bumps (3 to 4mm) most commonly found on the chin, nose, and back. And severe acne can leave behind hypertrophic or keloid scars, where the body overproduces collagen during healing, creating a raised, thickened area.
Most people have a mix of scar types, which is why a single treatment rarely does the job.
Professional Treatments That Resurface the Skin
Fractional laser resurfacing is one of the most effective options for depressed acne scars. The laser creates thousands of tiny columns of controlled injury in the skin, which triggers the body to rebuild collagen in those areas. Studies show an average improvement rate of around 38% after two courses of treatment, with most protocols involving three to five sessions spaced several weeks apart. Results continue developing for months after the final session as new collagen forms and matures.
There are two broad categories. Ablative lasers (like fractional CO2) remove thin layers of skin and produce more dramatic results, but they come with more downtime, typically one to two weeks of significant redness and peeling. Non-ablative lasers work beneath the surface without removing skin, offering less downtime but requiring more sessions for comparable results. The average cost is around $2,000 per session for ablative and $1,100 for non-ablative treatments, and most insurance plans don’t cover them.
Microneedling and Radiofrequency Microneedling
Professional microneedling uses a motorized pen-shaped device to create controlled micro-injuries across the skin’s surface. These tiny punctures trigger the same wound-healing response as lasers, stimulating collagen production over the following weeks. Most people need three to six sessions spaced four to six weeks apart.
Radiofrequency (RF) microneedling adds heat energy delivered through the needles, which heats larger volumes of tissue in the deeper layers of skin compared to standard microneedling. Newer non-insulated needle designs deliver energy along the full length of the needle rather than just the tip, creating more thorough collagen remodeling with fewer passes. RF microneedling tends to produce faster, more noticeable results for moderate scarring and is particularly effective for boxcar and rolling scars.
Recovery from either type of microneedling is generally mild: expect redness and slight swelling for a few days, with most people returning to normal activities within two to three days.
Targeted Treatments for Specific Scar Types
Some scars respond better to precision techniques than broad resurfacing.
For deep ice pick scars, a technique called TCA CROSS involves applying a highly concentrated acid (70 to 100%) directly into individual scars using a fine applicator. The acid triggers the scar to rebuild from the bottom up. Patients can expect a one to two grade improvement in scar depth over a six-month period, with treatments repeated every four to six weeks. This is one of the few methods that meaningfully improves narrow, deep scars that lasers struggle to reach.
For rolling scars, subcision is often the most effective first step. A needle is inserted beneath the scar to physically break the fibrous bands that are pulling the skin surface downward. Releasing these tethering bands allows the skin to lift, and the wound-healing process deposits new collagen underneath. Subcision works well for rolling and bound-down scars but is not effective for deep ice pick scars. It’s frequently combined with filler injections or other resurfacing treatments for the best outcome.
What You Can Do at Home
Topical treatments won’t erase deep scars, but they can improve skin texture, fade discoloration, and support results from professional procedures. Retinoids (available over the counter as adapalene or by prescription as tretinoin) increase cell turnover and promote collagen production over time. Consistent use over several months can soften shallow scars and improve overall skin quality. Start slowly, since retinoids cause dryness and irritation when your skin is adjusting.
Chemical exfoliants like glycolic acid and salicylic acid help smooth the skin’s surface by dissolving dead cells and encouraging turnover. Vitamin C serums provide antioxidant protection and can help fade both PIE and PIH marks. None of these will dramatically change the depth of a true scar, but they contribute meaningfully to an overall improvement in how your skin looks and feels.
At-home dermarollers are widely marketed, but the FDA draws a clear line between professional microneedling devices and consumer products. Home devices with short, blunt needles are designed for surface-level exfoliation and product absorption, not the deeper collagen remodeling that professional devices achieve. Home microneedling carries risks including skin damage, infection, dark or light spots, and cold sore flare-ups. If you do use one, never share it with anyone else, and clean it between uses as directed.
Recovery and Realistic Timelines
Collagen remodeling is a slow biological process. After most professional treatments, your skin continues rebuilding for about six weeks as new collagen strengthens and fills in the deeper layers. Full results from a series of treatments often aren’t visible for three to six months after the last session. This is one of the most important things to understand: improvement is gradual, and judging results too early leads to unnecessary disappointment.
Downtime varies widely. Mild procedures like standard microneedling or light chemical peels may only require a few days of redness. More intensive treatments like ablative laser resurfacing can mean one to two weeks before your skin looks presentable, with lingering pinkness lasting longer. Most people can return to desk work within a few days for milder procedures.
The best outcomes almost always come from combining treatments. A dermatologist might recommend subcision for rolling scars, TCA CROSS for a few deep ice pick scars, and then a round of laser or RF microneedling to improve overall texture. This layered approach addresses each scar type with the method best suited to its structure, rather than relying on one treatment to do everything.