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- Discover how to remove acne scars: find your type—ice pick, boxcar, rolling, raised—and match to laser or microneedling for sessions & recovery.
What you need to know
Acne scarring is common — roughly 80 % of people between ages 11 and 30 have experienced mild acne, and atrophic (depressed) scars appear in an estimated 80–90 % of acne patients according to one study cited by CeraVe. No single treatment works for everyone, but with the right approach a scar can diminish by as much as two-thirds, notes dermatologist Dr. Jonathan Braue of the Cleveland Clinic.
- 80–90% of acne patients develop atrophic scars
- 2/3 maximum improvement possible per scar
- 4–6 sessions for microneedling; 3–5 for laser
— The table below matches treatments to your scar type so you can compare sessions, recovery, and expected results at a glance.
What Type of Acne Scar Do You Have?
Identifying your scar type is the first step toward choosing an effective treatment. According to the Cleveland Clinic and CeraVe, acne scars fall into several categories, each with distinct characteristics. Atrophic (sunken) scars — ice pick, boxcar, and rolling — account for the vast majority of scar cases.
Ice pick scars
Small, narrow, deep column-like holes that look as though a sharp instrument punctured the skin. They are among the most challenging to treat because of their depth.
Atrophic
Boxcar scars
Depressed, oval or round craters with well-defined, sharp edges. They resemble chickenpox marks and vary in size from small to large.
Atrophic
Rolling scars
Wide, wave-like shallow depressions with sloping edges that give the skin an uneven, undulating appearance. They are caused by fibrous bands tethering the skin down.
Atrophic
Hypertrophic & keloid scars
Hypertrophic: raised, firm scars that stay within the boundary of the original blemish, usually appearing 1–2 months after a breakout. Keloid: thicker, raised scars that can spread beyond the original spot, sometimes appearing 3–12 months later.
Raised
Post-inflammatory hyperpigmentation (PIH)
Flat dark spots or patches left after acne heals. PIH is not a true scar — there is no tissue loss or raising — but it can persist for months. Especially common on darker skin tones.
Pigment only
Acne scar types and common treatment approaches — from home care to professional procedures. (Source: Health Products For You)
Which Acne Scar Treatments Work Best for Your Scar Type?
The table below compiles evidence from the Cleveland Clinic, Mayo Clinic, Venice Ave Dermatology, and Metro Dermatology. Use it to compare session counts, recovery timelines, and which scar types each treatment targets. No single approach works for every scar — combination therapy is common and often recommended.
| Treatment | Best for | Sessions | Recovery | How it works | Key notes |
|---|---|---|---|---|---|
| Laser resurfacing (CO₂ fractional, Pico) | Ice pick, boxcar, rolling | 3–5 | Up to 5 days (swelling, redness, possible bleeding) | Breaks down scar tissue and stimulates collagen production | Higher risk of side effects on darker skin or with keloid history. More precise than peels per Dr. Braue. |
| Microneedling | All atrophic (ice pick, boxcar, rolling) | 4–6 | Few days of redness; minimal downtime | Creates tiny puncture holes in scar tissue to trigger collagen remodelling | Widely tolerated across skin tones when done correctly. Often combined with topical serums. |
| Chemical peel | Mild boxcar, rolling, PIH | Usually 1 (deep); maintenance for mild/medium | Up to 7 days (redness, swelling, possible cold sores) | Removes the top layer of skin; stimulates turnover and collagen | Deep peels carry risk of pigment changes on darker skin. "If a chemical peel doesn't work, people often try lasers" — Dr. Braue. |
| Dermabrasion | Boxcar, rolling | 1 | "A couple of weeks" per Cleveland Clinic | Rotating tool "sands" the skin surface to smooth depressions | More invasive; longer recovery. Microdermabrasion is gentler but less effective for deep scars. |
| Subcision | Rolling, boxcar | 1–3 | Minimal downtime | Breaks fibrotic strands that tether the scar to underlying tissue | Often performed alongside other treatments (fillers, laser) for optimal results. |
| CROSS with TCA | Ice pick | Variable (multiple sessions common) | Similar to chemical peel (peeling, redness) | High-concentration TCA applied directly to each ice pick scar to stimulate collagen | Specifically designed for deep, narrow ice picks. Precision application limits damage to surrounding skin. |
| Soft tissue fillers (hyaluronic acid, collagen, poly-L-lactic acid) | Boxcar, rolling | 1 session; repeat every 6–12 months | No downtime | Plump indented scars from beneath to raise them to skin level | Temporary — results last months, not permanent. Brands include Restylane, Juvederm, Bellafill, Sculptra. |
| Fat transfer | Large boxcar, rolling | 1 | Variable (depends on harvest site) | Fat is harvested from another body area and injected into the scar depression | More involved procedure; some fat reabsorption can occur over time. |
| Steroid injections | Hypertrophic, keloid | 1–3 | Minimal | Reduces excess collagen and inflammation in raised scars | First-line treatment for raised scars. May be combined with silicone sheeting or massage. |
| Botox (onabotulinumtoxinA) | Puckered scars | Repeat treatments | No downtime | Relaxes surrounding skin to reduce tension around the scar | Temporary results; not a primary scar treatment. Listed by Mayo Clinic as an option for select cases. |
| Punch excision | Ice pick, small boxcar | 1 | Stitches heal in 1–2 weeks | Individual scar is surgically removed and the site closed with stitches or a small skin graft | Permanent removal of the scar, but leaves a new, smaller scar that typically fades well. |
"When you have damaged skin, no treatment will make it look perfect again. But depending on its severity, an acne scar can diminish by as much as two-thirds after treatment." — Dr. Jonathan Braue, dermatologist, Cleveland Clinic
Speed vs. permanence trade-off: Fillers and Botox offer immediate results but are temporary. Laser resurfacing and microneedling require more sessions and recovery time, but the collagen stimulation they produce yields longer-lasting improvement. Surgical options (punch excision, subcision) are more permanent but target individual scars rather than overall texture.
What At-Home Treatments Can You Use?
While professional procedures are needed to change the structure of indented or raised scars, at-home care plays a supporting role — especially for PIH and overall skin texture. The Cleveland Clinic, Mayo Clinic, and CeraVe all point to the same core ingredients.
Topical retinoids
Retinoids stimulate collagen production and help even out both skin texture and pigmentation. They are available over the counter (adapalene) or by prescription (tretinoin). Apply at night and always pair with sunscreen in the morning. Cleveland Clinic notes that retinoids are a mainstay for improving scar appearance over time.
Facial acids
Alpha hydroxy acids (AHAs), salicylic acid, and azelaic acid exfoliate dead skin cells, encourage cell turnover, and can help fade PIH. Mayo Clinic includes these among at-home options, particularly for mild textural changes and dark spots. Start with lower concentrations to avoid irritation.
Sunscreen is non-negotiable
Sun exposure darkens scar tissue and increases the contrast between scarred and unscarred skin, making every type of scar more noticeable. Daily use of broad-spectrum SPF 30+ is the single most impactful at-home step according to Cleveland Clinic and CeraVe. It also protects the healing skin after professional treatments.
What about natural remedies?
Proceed with caution. Ingredients like vitamin C (in stable formulations) have evidence for PIH reduction, and rosehip oil shows limited promise for overall scar appearance. However, lemon juice can worsen pigmentation, and harsh scrubs damage the skin barrier. No natural remedy will change the structure of atrophic or raised scars — those require in-office procedures.
How Can You Prevent New Acne Scars from Forming?
Stopping scars before they start is more effective than treating them later. These prevention strategies are drawn from the Venice Ave Dermatology risk-factor list and expert commentary from the Cleveland Clinic.
Treat active acne early
Cysts and nodules are the lesion types most likely to cause scarring. Early intervention — whether with over-the-counter benzoyl peroxide or prescription medications — reduces inflammation and lowers scar risk. Venice Ave Dermatology lists "not getting acne treatment" as a primary risk factor.
Never pick or squeeze
Picking at acne lesions is one of the top modifiable risk factors for scarring. Each squeeze increases inflammation and damages surrounding tissue. Use hydrocolloid patches or spot treatments instead.
Use sunscreen daily
As noted in the at-home section, sunscreen limits the contrast between healing skin and scarred areas, which reduces the likelihood that post-inflammatory pigmentation becomes long-lasting.
Start scar-preventing ingredients early
Retinoids and azelaic acid can be introduced even while acne is still active. They help normalise cell turnover and fade early dark spots before they set. Dr. Braue of Cleveland Clinic emphasises that "the skin can do a lot of healing once inflammation is controlled."
What Should You Know About Recovery and Realistic Expectations?
Recovery times vary significantly by treatment. The table below summarises data from the Cleveland Clinic and CeraVe. Alongside recovery, set realistic expectations: Dr. Braue states clearly that "no treatment will make it look perfect again," but improvement of up to two-thirds is achievable.
- Chemical peel — Redness, swelling, possible cold sores for up to 7 days.
- Laser resurfacing — Swelling, redness, possible bleeding for up to 5 days.
- Dermabrasion — Recovery takes "a couple of weeks" (Cleveland Clinic).
- Microneedling — Few days of redness; most people resume normal activities within 24–48 hours.
- Subcision / punch excision — Stitches heal in 1–2 weeks; bruising resolves in a week or two.
- Fillers / Botox — No downtime; minor swelling or bruising at injection sites resolves in 1–2 days.
- Hypertrophic scars (natural onset) — Appear 1–2 months after breakout.
- Keloid scars (natural onset) — Appear 3–12 months after breakout.
Bottom line on expectations: Most professional treatments require multiple sessions and weeks of healing before final results are visible. Plan for a treatment course that spans months, not days, and discuss realistic outcomes with your dermatologist.
How Does Skin Tone Affect Treatment Choices?
Melanin-rich skin requires extra caution when selecting scar treatments. The Mayo Clinic and CeraVe highlight specific risks.
Risks for darker skin
Mayo Clinic notes that laser resurfacing carries an increased risk of side effects — including hyperpigmentation or hypopigmentation — for people with darker skin tones or a history of keloids. Deep chemical peels similarly carry a risk of permanent skin colour changes for Fitzpatrick skin types IV–VI.
Why PIH is more common in melanin-rich skin
Post-inflammatory hyperpigmentation is more frequent and more persistent in darker skin because melanocytes are more reactive to inflammation. CeraVe underscores that PIH — while not a true scar — is a primary concern for many with skin of colour.
Safer alternatives
For darker skin, dermatologists often recommend starting with retinoids, gentle chemical peels (lactic acid or mandelic acid), and microneedling, which pose a lower risk of pigment disruption when performed by an experienced clinician. Always consult a dermatologist who has expertise in treating skin of colour. There is no single protocol that fits all melanin-rich skin types, so individual assessment is essential.
Which Treatment Should You Choose? A Decision Guide
Because "no single treatment is best for everyone" (Mayo Clinic), the right choice depends on your scar type, budget, tolerance for downtime, and whether you want temporary or permanent results. Use the scenarios below as a starting point, then discuss options with a board-certified dermatologist. Combination therapy — using two or more treatments in sequence — is common and often delivers the best outcome.
Ice pick scars, want permanent improvement
Consider: CROSS with TCA or punch excision. Both target individual deep pits. CROSS stimulates collagen from within; punch excision removes the scar entirely.
Rolling or boxcar scars, can afford downtime
Consider: Laser resurfacing (3–5 sessions) or microneedling (4–6 sessions). Both build collagen over time and improve overall texture. Subcision may be added to release tethering.
Raised scars (hypertrophic / keloid)
Consider: Steroid injections as first-line treatment. Silicone sheeting and massage are supportive at-home options. Venice Ave Dermatology also lists bio-oil for mild raised scars.
Post-inflammatory hyperpigmentation (PIH)
Consider: Topical retinoids, azelaic acid, AHAs, and strict daily sunscreen. These fade dark spots over 2–6 months. For faster results, light chemical peels or laser toning may be added.
Want quick, temporary results
Consider: Soft tissue fillers (hyaluronic acid) for boxcar or rolling scars. Immediate plumping effect with no downtime, but repeat treatments every 6–12 months are needed.
Multiple scar types, budget for combination therapy
Consider: A staged plan — e.g., retinol nightly (3 months), then 4 sessions of microneedling, then filler for remaining depressions. Or CROSS for ice picks + laser for overall texture. Your dermatologist will sequence these for optimal healing.
Ultimately, the most effective approach is one that matches your scar type, skin tone, schedule, and goals. The evidence is clear: improvements of 50–66% are realistic, and combining treatments often yields better results than any single modality alone. Start with a consultation at a clinic experienced with your skin type and scar profile.