How to Get Rid of Pimple Scars: What Actually Works

Getting rid of pimple scars depends on what kind of scar you have, how deep it goes, and how your skin responds to treatment. No single product or procedure erases every type of acne scar, but several treatments backed by clinical evidence can produce visible improvement. The gap between what actually works and what the internet sells you is wide, and understanding it can save you months of wasted effort and money.

Not All Pimple Scars Are the Same

Before choosing a treatment, you need to figure out what you are actually dealing with. The term “pimple scar” gets used loosely, but dermatologists distinguish between three very different problems that require different approaches.

• Atrophic scars: These are the most common true acne scars. They are indentations in the skin where tissue has been lost. They come in three subtypes: icepick scars (narrow, deep, and puncture-like), boxcar scars (wider with sharp edges), and rolling scars (broad, wave-like depressions). All three form because inflammation damaged the dermis and the skin could not rebuild its normal collagen and elastic fiber structure during healing.¹
• Hypertrophic and keloid scars: These are raised, thickened scars caused by the opposite problem: too much collagen production during healing. They result from overactive fibroblasts and a runaway wound-healing response.²
• Post-inflammatory marks: Flat red spots (post-inflammatory erythema, or PIE) and flat dark spots (post-inflammatory hyperpigmentation, or PIH) are technically not scars at all. They are color changes left behind after a pimple heals. They fade on their own over months, but treatments can speed that up. Even expert dermatologists sometimes disagree on whether a mark is PIH or just lingering redness from active acne.³

The rest of this article focuses primarily on atrophic scars because they are the most common and the hardest to treat. Post-inflammatory marks and raised scars get their own sections where the treatments diverge.

What Topical Products Can and Cannot Do

Topical treatments sit at the mild end of the spectrum. They are best suited for shallow scars, post-inflammatory marks, and as maintenance between procedures. Do not expect a cream to fill in a deep icepick scar.

Retinoids are the best-studied topical option for actual atrophic scars. They promote collagen remodeling and speed skin cell turnover. A study of adapalene 0.3% gel found that after 24 weeks of daily use, investigators noted improvement in skin texture and atrophic scars in about half of subjects, while more than 80% of subjects themselves felt their scars had improved.⁴ A broader review of topical retinoids confirmed they have a well-established role in both treating acne and improving the appearance of atrophic scars over time.⁵ Tretinoin (prescription-strength) tends to be more potent than over-the-counter retinol, though it also causes more irritation, peeling, and sun sensitivity.

For dark marks specifically, the toolkit expands. A Delphi consensus panel of dermatologists recommended hydroquinone, azelaic acid, chemical peels, and antioxidants for acne-associated hyperpigmentation.⁶ More recent guidance added oral tranexamic acid and isotretinoin to the list of options across all skin types.⁷ Azelaic acid is especially worth knowing about because it fades dark marks while also being anti-inflammatory and safe for use during pregnancy, making it a versatile pick.

The CROSS Technique for Deep Icepick Scars

Icepick scars are the most stubborn type. They are so narrow and deep that broad resurfacing treatments often cannot reach the bottom. The CROSS technique (chemical reconstruction of skin scars) was designed specifically for this problem. A dermatologist applies a high concentration of trichloroacetic acid (TCA) directly into each individual scar using a fine applicator, triggering a controlled wound-healing response that rebuilds collagen from the bottom of the scar upward.

The results are consistently strong across studies. In one trial, more than 70% improvement was seen in eight out of ten patients after multiple sessions, with no significant side effects.⁸ A study focusing specifically on darker skin types found similar results: about three-quarters of patients achieved more than 70% improvement after four sessions.⁹ When researchers compared concentrations, 100% TCA worked better on icepick scars than on boxcar scars, underscoring that this technique is really tailored to the narrow, deep variety.¹⁰

Despite using a strong acid, the procedure is considered minimally invasive and cost-effective because only tiny amounts of acid touch the skin at precise points. Recovery is quick compared to full-face peels. You will typically need three to six sessions spaced a few weeks apart.

Microneedling and Radiofrequency Microneedling

Microneedling uses a device covered in fine needles to create thousands of tiny punctures in the skin. This triggers a wound-healing response that stimulates new collagen production without destroying the surface. Radiofrequency (RF) microneedling adds heat energy delivered through the needles, which drives the collagen-remodeling effect deeper into the dermis.

In a study of patients with moderate to severe acne scars treated with RF microneedling, about 80% improved by two scar grades (on a standard clinical scale), and the remaining 20% improved by one grade.¹¹ The advantage of microneedling over ablative lasers is a shorter recovery period and lower risk of post-inflammatory darkening, which matters for darker skin types. The downside is that improvement tends to be more gradual, requiring multiple sessions.

Laser Treatments for Acne Scars

Lasers fall into two broad camps. Ablative fractional lasers (most commonly CO2) vaporize tiny columns of skin, forcing the body to rebuild those areas with fresh tissue. Non-ablative fractional lasers (like the 1550 nm erbium-glass) heat the deeper skin without destroying the surface, causing less visible damage but also less dramatic results per session.

A meta-analysis pooling data from seven studies found that ablative lasers produced superior results on both observer-based and patient-driven evaluations, while non-ablative lasers offered a better safety profile with less pain and shorter redness.¹² A split-face randomized trial illustrated the tradeoff clearly: the CO2 laser side showed slightly better clinical improvement, but patients had crusting and scaling for an average of about seven days compared to about two days for the non-ablative side, and post-treatment redness lasted roughly 11 days versus 7 days.¹³

In practical terms, the choice depends on how much downtime you can tolerate and how aggressive you want each session to be. Many dermatologists start with non-ablative treatments and move to ablative lasers only if the response is insufficient.

Subcision for Tethered and Rolling Scars

Some scars, especially rolling scars, look depressed because fibrous bands beneath the skin pull the surface downward like a tent stake. Subcision is a minor procedure where a needle or small blade is inserted under the scar to cut those bands, releasing the tethered skin so it can rise back to the level of the surrounding surface.

Subcision is frequently paired with platelet-rich plasma (PRP), which is injected into the treatment area to promote healing. In a split-face study, the subcision-plus-PRP side showed statistically stronger improvement than microneedling with PRP: 80% of patients on the subcision side improved by two or more scar grades.¹⁴ A separate study in Vietnamese patients confirmed significant and progressive scar improvement across multiple visits, with adverse effects limited to temporary pain, swelling, and redness.¹⁵

Subcision is most effective for rolling and some boxcar scars. Icepick scars, which are narrow and deep rather than broad and tethered, do not respond as well to subcision alone.

Treating Red and Dark Marks That Are Not True Scars

If your main concern is flat red or brown spots where pimples used to be, you are dealing with post-inflammatory color changes rather than textural scarring. These are easier to treat but can linger for months or even years without intervention, especially in darker skin.

For persistent redness (PIE), pulsed-dye lasers are the most commonly used device. A systematic review found that light and laser-based devices were the dominant approach in the literature, with pulsed-dye lasers appearing most frequently.¹⁶ For a combination of redness and dark spots, intense pulsed light (IPL) showed complete or partial clearance of both erythema and hyperpigmentation in about 82% of patients in a retrospective study.¹⁷

Sunscreen is not just a nice add-on here. UV radiation and visible light directly stimulate melanocytes and worsen existing dark marks.¹⁸ Most conventional sunscreens do not block visible light, which is a separate concern from UV. Newer broad-spectrum formulations with iron oxide tints offer better protection against visible-light-driven darkening.¹⁹ Wearing sunscreen consistently while treating dark marks is probably the single most overlooked step; without it, treatments that fade spots are fighting against daily re-darkening.

Why Combination Approaches Tend to Win

Because different scar types sit at different depths and involve different structural problems, combining treatments often outperforms any single method. A pilot study using a triple combination of TCA dot peeling, subcision, and fractional laser achieved a mean 55% reduction in scar severity scores, with 80% of patients reporting significant or marked improvement.²⁰ The logic behind this combination is straightforward: the acid rebuilds collagen inside deep scars, subcision releases the tethering beneath broader scars, and the laser resurfaces the overall skin texture.

Another case series used a similar three-pronged approach (CROSS technique, blunt-cannula subcision, and microneedling) and reported consistently high patient satisfaction along with photographic evidence of improvement across patients of various skin types.²¹ A study combining subcision with PRP and the CROSS technique on opposite sides of the face confirmed significant improvement on both sides, though it recommended subcision with PRP as the core combination.²²

A skilled dermatologist will typically assess your face, identify which scar types are present (often a mix), and stagger treatments targeting each type. Expecting one treatment to address everything is the most common misconception people bring to the consultation.

Darker Skin Needs Extra Caution

If you have medium to dark skin, every treatment carries an additional risk: post-inflammatory hyperpigmentation from the treatment itself. The very procedures meant to improve scars can trigger new dark marks if they cause too much inflammation. This risk is real with lasers, with high concentrations of TCA, and even with aggressive microneedling.²³

Fractional CO2 laser resurfacing for acne scars in darker skin types carries a significant limitation from post-inflammatory hyperpigmentation.²⁴ Even non-ablative fractional lasers, which are generally gentler, can cause hyperpigmentation, especially at higher treatment densities.²⁵ The key strategies are starting at lower energy settings, using fewer passes, spacing treatments further apart, and pre-treating with topical agents like hydroquinone or azelaic acid to suppress melanocyte activity before the procedure. A dermatologist experienced with treating skin of color is worth seeking out; the difference in outcomes is not trivial.

The Reality of Over-the-Counter Scar Products

Drugstore shelves are lined with products claiming to remove scars. Most have thin evidence. Onion-extract gels (like Mederma) have some data behind them: a randomized, blinded study found that after eight weeks, investigator and subject ratings showed the onion-extract-treated scars were significantly more improved than untreated control scars in all appearance variables.²⁶ But that study was on fresh surgical scars, not old atrophic acne scars. When silicone gel containing onion extract was compared head-to-head with silicone gel sheets for preventing raised scars, both performed similarly, with no significant difference in scarring rates.²⁷

Silicone-based products have the best evidence among OTC options, but primarily for raised scars and keloids rather than for the indented scars most people mean when they say “pimple scars.” If your scars are flat depressions, a retinoid or azelaic acid cream will generally do more than an onion extract or silicone sheet. Products containing vitamin C, niacinamide, or alpha hydroxy acids are reasonable for fading dark marks, though the evidence is largely from small studies and the effects are modest compared to prescription options.

Injectable Fillers for Volume Loss

When atrophic scars are wide and deep enough, injectable fillers can physically raise the depressed area. Hyaluronic acid fillers give immediate but temporary results lasting several months. Poly-L-lactic acid (PLLA) works differently: it stimulates your own fibroblasts to produce collagen over time, with improvements noted to last up to two years in case studies of patients with severe acne-related fat atrophy.²⁸ Fillers are particularly useful for broad rolling scars or areas of generalized volume loss around the temples and cheeks. They are not practical for dozens of tiny icepick scars.

Why Preventing Scars Is Easier Than Fixing Them

The single most effective scar treatment is never getting the scar in the first place. Research into how atrophic scars form has shown that the process begins with excessive inflammation that triggers an abnormal signaling cascade, which then degrades collagen and elastic fibers in the dermis. Early and aggressive treatment of inflamed acne lesions, particularly cystic and nodular breakouts, can interrupt that process before permanent tissue loss occurs.¹ Picking, squeezing, or popping pimples dramatically increases inflammation and scar risk. If you have acne that is leaving marks, getting the active acne under control with a dermatologist is the highest-return move you can make.

The Emotional Weight of Acne Scars

Acne scars affect more than appearance. A multi-country population-based survey found that people with atrophic acne scars reported significant embarrassment and self-consciousness, and this was true even in people with mild scarring.²⁹ Another study found that greater perceived scar severity was linked to higher anxiety and anger, along with reduced confidence, happiness, and sociability. Critically, people with clinically mild scars sometimes reported quality-of-life impairment just as severe as those with objectively worse scarring.³⁰ This matters because it means pursuing treatment for “mild” scars is not vanity. If scars are affecting how you feel or how you move through the world, that is a legitimate reason to seek care.

Emerging Treatments on the Horizon

The frontier of acne scar treatment is moving toward regenerative approaches. Exosomes derived from fat tissue stem cells are being tested as an add-on to fractional CO2 laser. In a randomized split-face trial, the side treated with exosomes after laser resurfacing achieved about a third greater reduction in scar severity scores compared to the laser-only side, and recovered faster with less redness.³¹ A systematic review confirmed that various stem-cell-based and exosome treatments show promising improvements in scar thickness, skin elasticity, and collagen density, though the evidence base is still small.³²

These treatments are not yet widely available outside clinical trials and research settings. But the direction is encouraging: rather than just stimulating wound healing indirectly through controlled damage (as lasers and needles do), future approaches may deliver biological signals that directly instruct the skin to rebuild more normal tissue. If you have severe scarring and are in no rush, it may be worth watching this space over the next few years while using established methods in the meantime.