Fractional CO2 Resurfacing
- The claim
- Improves sun damage, texture, fine lines and mild laxity in a single treatment.
- The verdict
- The most reliably effective resurfacing tool available, with a recovery that matches the size of the effect.
- Worth it?
- Yes, for surface and upper-dermal findings in a candidate who can take two weeks. No for volume or descent.
What the evidence supports
Ablative fractional resurfacing has consistent controlled evidence, histologic confirmation of dermal remodeling, and effect sizes larger than anything non- ablative. The grade is B, and the reason is worth stating plainly: the size of the effect is settled, while the published evidence behind it is prospective series of ten and forty-five patients, where sunscreen and tretinoin each have large randomized trials. A strong verdict with a middling grade is the correct reading here. The grade measures the evidence. The trade is not subtle: real downtime, a genuine risk of post- inflammatory hyperpigmentation in darker skin types, and a healing protocol that has to be followed. Most poor outcomes trace to candidate selection or aftercare, not to the technology. The day-by-day recovery is set out in the guide.
How I use it
One aggressive pass, deliberately. A series of lighter sessions does roughly what a superficial peel does — real, but not what people come to me for. The depth is what improves a deep line, and the recovery is the price of the depth.
I combine it with a facelift more often than I do it alone, because the two answer different complaints. A lift repositions tissue and changes nothing about the surface. Fractional CO2 is the only thing in my office that meaningfully improves skin quality — tone, texture, sun damage, crepiness, fine lines — and that makes it a good partner to surgery, and a good way to protect what the surgery achieved.
The limiting factor is skin type. In darker skin types the post-inflammatory hyperpigmentation risk is high enough that I generally do not recommend it. Around the Fitzpatrick II–III border I test a small inconspicuous patch first and watch it for several weeks before going near someone's face.
What this is based on
- Tierney, Hanke & Petersen, ablative fractionated CO2 laser for photoaging — clinical and histologic studyDermatologic Surgery · 2012
- Tierney & Hanke, fractionated CO2 laser for photoaging — prospective study in 45 patientsDermatologic Surgery · 2011
- Ochi et al., fractional CO2 laser for facial acne scarring in Asian patients — efficacy and a 15% adverse event rateDermatologic Surgery · 2017
Grades describe the quality of the human evidence, not my opinion of the treatment. Where the literature changes, the grade changes and the review date moves with it.
The full guide
All guides →Fractional CO2 Recovery, Day by Day: What the Two Weeks Actually Look Like →
The most powerful resurfacing tool we have, and the one most often used on the wrong patient. Here is what the treatment does to skin, who it suits, and an honest day-by-day account of the recovery nobody describes in advance.
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What changed in facial rejuvenation this week, one guide we updated, and why it matters. Written by Jay Keni, MD.