CO2 Laser Recovery: What the Week After Actually Looks Like

By Alexander E. Bonato, MD — Board-Certified in Internal Medicine · Medically reviewed September 2026.

TL;DR: CO2 laser recovery is not a lunchtime-procedure fantasy. The first few days bring real swelling and a sunburn-like sting, a visible grid pattern settles over about ten days, and your skin stays sun-sensitive for at least a month, sometimes up to six. Most of that timeline is predictable, most of the discomfort is manageable with basics like Tylenol and cool compresses, and there are real steps, like a specific cream regimen before and after, that measurably lower your odds of the one complication most people actually worry about: dark spots left behind.

Two dogs, one wrong trail, and what used to be a clean car interior. I'm not going to describe the smell. I will say the detailing invoice was the second most humbling part of that day, right behind explaining to the groomer why both dogs needed to see her before either one was allowed back in the house.

That entire disaster was completely avoidable if I'd just planned the walk instead of winging it. Which is basically the whole lesson of CO2 laser recovery. It goes fine when you follow the plan. It goes sideways when you improvise. I'm a board-certified physician at Bonato MD Aesthetics, and after we covered what fractional CO2 laser resurfacing actually treats, the question I get most is some version of "okay, but what does the week after actually feel like." So let's walk through it day by day instead of the vague "some downtime expected" line you usually get.

The First Two Hours

Right after treatment, most people describe a hot, flushed, sunburn-like feeling that can last anywhere from thirty minutes to about four hours. In the trial data I trust most on pain, patients rated the treatment itself 3 to 7 out of 10, with most people under a 4. Cool compresses help in the moment, and plain Tylenol covers the rest for most people. It's an unpleasant afternoon, not a crisis, which is a distinction I wish someone had made clear to me before my last root canal.

Days 1 Through 4

Swelling is normal here, and sleeping with your head elevated for the first two nights genuinely helps. You'll clean the area gently, twice a day, with a mild cleanser or a diluted vinegar rinse, then pat dry and reapply an occlusive ointment to keep the skin moist the entire time. That's it for products. No retinol, no vitamin C, nothing else, until we clear you for it.

Don't pick at anything. Stay out of direct sun. Skip exercise for four full days. Drink more water than feels necessary, 64 ounces a day is the target. And yes, sleep on your back, on a pillowcase you don't love, because ointment and your favorite pillowcase are not a good combination. I learned a version of this lesson with the dogs and a car seat cover. Some fabrics you just accept are temporary now.

Days 5 Through 10

Healing genuinely varies person to person here, but your skin is likely pink at this point, which is a normal part of re-epithelialization, meaning the new surface layer finishing its job. Once that's done, you switch to a zinc or titanium-based mineral sunscreen. A wide-brimmed hat and sunglasses are your actual friends outdoors, not an accessory choice. We'll talk through exactly when makeup, exercise, and your regular actives like retinol or hydroquinone can come back, because it depends on how you're individually healing, not a fixed date on a calendar.

The Part That Actually Worries People: Dark Spots

Post-inflammatory hyperpigmentation, meaning dark patches where the treated skin was, is the most common complication after CO2 resurfacing, and it is genuinely unpredictable. A review pooling 14 studies and over 300 patients found the incidence ranged from 0% to 100% depending on the study, and skin type itself wasn't a reliable predictor of who it happened to.

But some things measurably help. In one small trial, an ultra-potent topical steroid cut the incidence from 75% down to 39% compared to plain petroleum jelly. In another, a topical antibiotic cream with anti-inflammatory properties brought it from 91% down to 53% compared to a different antibiotic ointment. In the wrinkle trial I trust most for this clinic's own protocol, a prophylactic hydroquinone cream applied before and after treatment brought the rate down to zero on the treated side, versus 20% on the side that didn't get it, a real, statistically solid difference. That's exactly why we send you home with a specific cream regimen, and why skipping it is the single most common way people end up disappointed with an otherwise unremarkable result.

If anything looks like it's darkening in the weeks afterward, the fix is easier the earlier we catch it. Call us. Don't wait for your next scheduled check-in.

How Long Until You Look Like You Again

Most of the visible grid pattern and redness has settled by day 10 to 14 for most people. Sun avoidance is the real commitment here, at least four weeks, and up to six months for the best long-term result, because collagen remodeling underneath the surface keeps going long after the skin looks normal again. The wrinkle trial I referenced in our resurfacing overview kept showing improvement all the way to six months post-treatment. That's not a coincidence. It's the same slow process finishing its work.

Frequently Asked Questions

How long until I can wear makeup?

We'll typically clear you somewhere after re-epithelialization is complete, usually within the day 5 to 10 window, but it depends on your individual healing. We'd rather you ask twice than guess once.

Does it really feel like a sunburn?

That's the most common description patients give us, right down to the timing. It fades within a few hours, which is faster than most actual sunburns, so at least there's that small mercy.

What actually causes the dark spots, and can I prevent them?

It's an inflammatory response in the skin, and it's not fully predictable even in the research. What you can do is follow the cream regimen we give you exactly as prescribed, avoid sun rigorously, and flag any early darkening immediately instead of waiting to see if it fades on its own.

When can I work out again?

Four full days minimum, and that's for a reason, sweat and friction on healing skin is exactly what we're trying to avoid in that window. After that, we'll check how you're healing before clearing anything more intense.

What if I have a history of cold sores?

Tell us before treatment. We prescribe antiviral prophylaxis for anyone with a herpetic history, because the laser can trigger an outbreak, and preventing one is a lot easier than treating one afterward.

Can I use my retinol or vitamin C serum the week of treatment?

No, and this isn't a small ask, it's a real rule. Active products get paused 72 hours before treatment and stay paused until we clear your skin to resume them. Healing skin and active ingredients don't mix well, and this is one of those weeks where less really is more.

Plan the Walk, Don't Wing It

The recovery itself is predictable when you follow it, and genuinely uncomfortable if you don't. If you're in Medford, Ashland, or Grants Pass and you want the fuller picture of what this treatment actually treats before you commit to a recovery week, start with our CO2 laser resurfacing overview. When you're ready, come in and let's talk through your specific timeline.

Book a consultation and we'll build a recovery plan around your actual schedule, not a generic one.

References

1. Wu X, Cen Q, Jin J, et al. An Effective and Safe Laser Treatment Strategy of Fractional Carbon Dioxide Laser for Chinese Populations with Periorbital Wrinkles: A Randomized Split-Face Trial. Dermatol Ther (Heidelb). 2025;15(6):1307-1317. https://doi.org/10.1007/s13555-025-01404-3

2. Bin Dakhil A, Shadid A, Altalhab S. Post-inflammatory hyperpigmentation after carbon dioxide laser: review of prevention and risk factors. Dermatol Rep. 2023;15:9703. https://doi.org/10.4081/dr.2023.9703