Ablative vs Non-Ablative Laser Resurfacing: Which Do You Need?

Cleveland Clinic describes laser resurfacing as a treatment that removes the outer layer of skin (the epidermis) while heating the underlying dermis to stimulate new collagen; it is also called a laser peel, lasabrasion or laser vaporization.

The American Society for Dermatologic Surgery (ASDS) defines the ablative version as resurfacing that improves the skin by removing layers of skin.

Removal is the defining feature of the category.

Both of the lasers ASDS names as the two most common resurfacing lasers are ablative.

CO2 lasers are used for wrinkles, scars, warts and other conditions, while erbium lasers remove superficial and moderately deep lines and wrinkles on the face, hands, neck and chest and cause fewer side effects than CO2. The laser resurfacing guide covers the procedure as a whole, and our CO2 guide covers that device in depth.

One regulatory distinction: CO2 lasers are 510(k)-cleared devices, not FDA-approved ones — the cleared uses for one fractional CO2 system (the Candela/Syneron CO2RE, cleared in 2018 under K181523) include dermatological procedures requiring ablation, coagulation and resurfacing of soft tissue including skin.

Devices are cleared; drugs are what FDA approves.

"Fractional" is a shot pattern, not a third category.

Cleveland Clinic explains that traditional CO2 and erbium resurfacing injure the whole treatment area uniformly, while fractional CO2 drills many narrow columns of holes into the skin and leaves the surrounding skin untreated and intact.

Those columns still remove tissue, so fractional CO2 is an ablative technique — and non-ablative lasers come in fractional versions too, which is why studies say "non-ablative fractional." The fractional-vs-fully-ablative comparison lives on our fractional CO2 page.

ASDS defines non-ablative laser rejuvenation as using a laser to improve the skin by creating heat without injuring the surface, with age spots, scars, sun damage and wrinkles among its listed uses.

The category's trade is less change per session for a better safety profile and an easier recovery — the next section puts numbers on that trade.

Devices in it: Sciton describes MOXI as a non-ablative fractional 1927 nm laser aimed at "prejuvenation", early sun damage, uneven tone and texture, and recommends 2 to 4 treatments. "Prejuvenation" is a marketing term, not a cleared indication — Sciton's 1927 nm clearance (K182173, 2019) covers soft-tissue coagulation, actinic keratosis and benign pigmented lesions such as age spots, sun spots and freckles; we could not locate a MOXI-specific 510(k) summary.

Our Moxi guide covers the device.

Halo deliberately straddles the line: Sciton describes it as a "hybrid fractional laser" that delivers a non-ablative 1470 nm wavelength and an ablative 2940 nm wavelength to the same microscopic treatment zone, so one session does both kinds of work.

The Halo guide covers the device.

Fraxel is the one we cannot sort for you.

Its current model, Fraxel FTX (Solta Medical), was FDA-cleared through the 510(k) pathway on 21 August 2024 (K242142); the earlier Fraxel DUAL 1550/1927 was cleared 14 June 2013 (K130193).

Solta lists the 1550 nm wavelength for skin resurfacing including dyschromia, age spots and sun spots, actinic keratosis, melasma, wrinkles around the eyes, and acne and surgical scars, and the 1927 nm wavelength for resurfacing including actinic keratosis and pigmented lesions such as age spots, sun spots and freckles.

Our sources name those wavelengths but do not sort Fraxel's modes into either camp, so ask a provider which wavelength your treatment would use.

The Fraxel guide covers the device in full.

Downtime is the clearest difference.

Cleveland Clinic gives recovery of up to two weeks for traditional CO2 resurfacing, one full week for erbium and one full week for fractional resurfacing, with treated areas generally healing in 5 to 21 days depending on the condition and the laser.

ASDS puts healing at 3 to 10 days depending on the depth of resurfacing and the type of laser, with daily soaks, ointment and re-dressing.

The American Academy of Dermatology (AAD) says ablative resurfacing requires staying home for 5 to 7 days.

What buys that recovery is depth of change.

AAD calls ablative laser resurfacing the most effective non-surgical procedure for tightening loose skin, with the tightening and fewer wrinkles appearing within 2 weeks after healing.

In a 2018 systematic review of energy-based acne scar treatments (59 articles), ablative lasers achieved the highest degree of efficacy, but the review ties that to significant pain, downtime and a risk of long-term pigment change; non-ablative fractional lasers were safer but less effective.

Non-ablative work arrives in a series: AAD says the non-ablative lasers used for skin tightening may need 3 to 5 treatments, with results appearing gradually 2 to 6 months after the last one, and Sciton recommends 2 to 4 MOXI treatments.

Devices outside a clean category vary: Sciton lists 1 to 2 treatments for its hybrid Halo, with 3 to 5 days of downtime, and Solta says Fraxel results may show after one treatment but that up to five may be appropriate.

Calibrate two expectations.

Fractional does not eliminate recovery: the sources give it about a week — the same as erbium — and a single fractional session has limited effect.

In one randomized split-face trial, 28 people had one fractional CO2 or fractional Er:YAG session (both ablative) around the eyes; wrinkle depth fell by about 20% with no meaningful difference between the lasers, and the authors concluded multiple sessions may be needed.

So fractional is not a shortcut to a fully ablative result.

And resurfacing results are not permanent: Cleveland Clinic says skin may keep improving for up to a year after treatment and results may last several years, though normal aging keeps producing new wrinkles.

Neither category gets a blanket "safe" here, because the sources do not give one.

ASDS and Cleveland Clinic both say people with active acne or very dark skin usually are not good candidates for ablative laser resurfacing; Cleveland Clinic adds that darker skin carries a greater risk of healing with hyperpigmentation and that erbium may be a better choice for darker skin.

The complication data point the same way.

In the 2026 review of 2,010 cases, post-inflammatory hyperpigmentation was the most common complication, particularly in Fitzpatrick skin types IV–VI.

A 2023 review of acne scar treatment in skin types IV–VI calls non-ablative fractional lasers first line in skin of color for their better safety profile — while noting they are less effective and need more sessions than ablative lasers — and adds that PIH risk depends on skin type, device, fluence and especially density.

The gentle end of the non-ablative range has early support in darker skin, with caveats: a 2020 review of 1440/1927 nm non-ablative fractional diode lasers (a different manufacturer's system, cited here for the wavelength) called 1927 nm appropriate for skin of color, with a reduced risk of the adverse events seen with other non-ablative and ablative fractional lasers, and a 2025 review of the same laser class found the expected reactions — redness, swelling, crusting — were mild to moderate and self-limited, with no serious adverse events reported in patients with skin of color.

Neither review studied MOXI or Fraxel specifically.

A caveat first: this is a map of what each category is documented to do, not a way to pick your own treatment.

Cleveland Clinic lists acne and chickenpox scars, uneven pigmentation, age spots, sun damage and fine lines around the eyes, forehead or mouth as the concerns that make someone a good candidate for resurfacing, and deep wrinkles and excessive or sagging skin among the reasons someone may not be.

A licensed provider has to examine your skin before any of this maps onto you.

Mild textural change — early sun damage, uneven tone — is what the non-ablative category's listed uses describe: ASDS lists age spots, scars, sun damage and wrinkles, and Sciton aims MOXI at early sun damage and uneven tone.

The trade-off is the series: more sessions, slower visible change.

For scars, the efficacy evidence favors the ablative category — in the acne-scar literature, at least.

The sources make no such comparison for deep wrinkles, which Cleveland Clinic lists among the reasons someone may not be a good candidate for resurfacing at all.

The 2018 review ranked ablative lasers highest for efficacy among the energy-based acne scar treatments it covered, and the 2023 review notes non-ablative fractional lasers need more treatments than ablative ones.

The 2026 complication review tied ablative lasers (CO2, Er:YAG) to the highest scarring and infection risks.

That is the trade in one sentence.

Acne scars are where our sources compare the two categories most directly: the 2018 review gives ablative lasers the efficacy edge and non-ablative fractional lasers the safety edge, and the 2023 review puts non-ablative fractional lasers first line for acne scars in skin of color (skin types IV–VI).

Which one fits a given face, skin type and calendar is a question for a licensed provider who has examined your skin.