CO2 laser resurfacing Before and After: What Results Look Like

Cleveland Clinic describes laser resurfacing as removing the outer skin layer (the epidermis) while heating the dermis to stimulate new collagen.

That mechanism is what resurfacing aims at: changes to texture, lines and surface pigment.

CO2 lasers are 510(k)-cleared devices, not FDA-approved.

One example, the Candela/Syneron CO2RE fractional system (K181523, 2018), is cleared for dermatological procedures requiring ablation, coagulation and resurfacing of soft tissue including skin.

The concerns Cleveland Clinic lists as good reasons to consider resurfacing are acne and chickenpox scars, uneven pigmentation, age spots, sun damage, and fine lines around the eyes, forehead or mouth.

Timing matters when you compare photos.

Cleveland Clinic says new skin is pink at first and lightens over 2 to 3 months.

Redness generally fades in 2 to 3 months but can last 6 months to a year, and it lasts longer in people with blonde or red hair.

Skin may keep improving for up to a year, and the improvement may last several years, though normal aging brings new wrinkles.

It depends on which kind of CO2 treatment you mean.

Traditional CO2 resurfacing injures the whole treatment area, while fractional CO2 drills many narrow columns into the skin and leaves the surrounding skin untreated and intact, in Cleveland Clinic's description.

The best-measured single-session figure is for around the eyes.

In a randomized split-face trial of 28 people, one fractional CO2 or fractional Er:YAG session reduced wrinkle depth by about 20%, with no meaningful difference between the two lasers.

The authors concluded that multiple sessions may be needed.

Where more sessions were tested directly, in a 25-patient study of the lower eyelids, 2 to 3 sessions of ablative fractional CO2 (average 2.44) gave about 62–66% mean improvement in texture, laxity and wrinkles at 6 months.

That is one small, physician-performed study, so read it as a data point, not a promise.

We found no tested session count for traditional full-field CO2 in the sources for this page, so the number of treatments is a question to put to your provider for your skin.

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

The healing course day by day is its own topic, covered in our CO2 laser resurfacing guide.

The clearest way to read CO2 before-and-after photos is concern by concern, because the measured evidence is not the same for all of them.

• Fine lines and wrinkles. Measured wrinkle-depth figures: about 20% less depth around the eyes after one fractional session in 28 people, and about 62–66% mean improvement in under-eye texture, laxity and wrinkles at 6 months after 2 to 3 sessions in 25 people.
• Loose or lax skin. The American Academy of Dermatology calls ablative laser resurfacing the most effective non-surgical procedure for tightening loose skin, and says tightening and fewer wrinkles appear within 2 weeks after healing. The same source says it requires staying home for 5 to 7 days and carries greater risk of side effects such as scarring.
• Acne scars. The AAD's framing is the honest one: laser treatment can make a scar less noticeable but cannot get rid of it — "you're replacing one scar with another less-noticeable scar" — and results can take months to appear. A 2018 systematic review of 59 articles found ablative lasers achieve the highest efficacy for acne scars, but with significant pain, downtime and risk of long-term pigment change.
• Pigment, age spots and sun damage. These are on Cleveland Clinic's good-candidate list, but the sources we checked give no percentage improvement for them with CO2 treatment, so ask a provider what change they generally expect to see.

Two people can have the same laser on the same area and heal to different results, and the sources name specific reasons.

Skin tone is the clearest one.

ASDS and Cleveland Clinic both say people with active acne or very dark skin usually are not good candidates for ablative resurfacing, and Cleveland Clinic notes that darker skin carries greater risk of healing with hyperpigmentation, with erbium possibly a better choice there.

CO2 resurfacing is not a treatment whose results carry across every skin type: in a 2026 review of 13 studies covering 2,010 facial laser cases, post-inflammatory hyperpigmentation was the most common complication, particularly in Fitzpatrick types IV–VI.

Healing itself varies.

Cleveland Clinic notes redness lasts longer in people with blonde or red hair, and its timeline runs from days of peeling and pink new skin, to months of fading redness, to a year of further improvement.

What you start with matters too.

Cleveland Clinic lists deep wrinkles and excessive or sagging skin as reasons someone may not be a good candidate, so before-and-after photos showing those concerns transformed deserve extra skepticism.

In a practice's marketing, before-and-after photos are advertising, and the FTC's Endorsement Guides apply to them.

Under those guides, a before-and-after picture paired with a results claim conveys that the result is typical; if consumers cannot generally expect such results, the ad would be deceptive.

The same guidance says an advertiser without substantiation that an endorser's experience is representative should clearly and conspicuously disclose the generally expected performance, and FTC research found "results not typical" disclaimers ineffective.

So the useful question is not "is this photo real?" but "what result does this provider generally expect for skin like mine?" — a question they should be able to answer in words.

Ask when each photo was taken.

Because improvement continues for up to a year and redness can take months to fade, an "after" shot from week two and one from month six are different pictures of the same face.

Ask whose face it is, too.

Under HIPAA, a covered health care provider must obtain a patient's written authorization to use or disclose protected health information for marketing, and full-face photographic images are listed identifiers of protected health information.

And whatever the gallery shows, treat it as one person's result under one set of conditions, not a preview of yours.

Results vary, which is why the standard the FTC holds ads to is the generally expected performance, not the best case on the wall.