The treatment takes under an hour. The recovery is the part people need to plan for, and it is the part most articles skate over.
Fractional CO2 resurfacing removes tissue in a controlled grid and heats the layer beneath, so the skin has real healing to do afterwards. Knowing what that looks like day by day makes the difference between a week that feels manageable and one that feels alarming. What follows is what actually happens, and what is worth ringing the clinic about.
How long is the downtime?
Around a week of looking visibly treated, followed by several weeks of skin that looks fine to everyone else but still feels different to you. Most people take four to seven days away from anything social rather than time off their feet, since you are not unwell, just conspicuous.
Depth changes this. A lighter treatment aimed at texture and tone heals faster than a deeper one aimed at acne scarring, and the plan is set at consultation with that trade-off explicit.
What happens day by day
The first 24 hours
Skin is red, hot and tight, much like a strong sunburn, and it feels that way for several hours after the numbing wears off. Swelling is normal and often peaks the following morning, particularly around the eyes, which surprises people who were expecting the redness to be the main event. Sleeping propped up on an extra pillow helps more than anything else at this stage.
The skin also weeps slightly. That is a normal part of the healing surface forming, not infection, and it settles within a day or two.
Days two to three
Swelling starts to reduce and the redness deepens to a bronzed or coppery tone. The surface takes on a fine sandpaper texture, sometimes described as looking like a grid, which is the treated columns of tissue drying out.
This is when the itch usually begins, and it is the point at which most people struggle. Cool compresses and keeping the skin properly greased are the answer. Scratching is not.
Days four to six
The treated surface starts flaking away in small pieces, and new skin appears underneath looking pink and slightly shiny. Peeling is uneven by nature, so parts of the face clear before others and it looks worse than it is halfway through.
Do not help it along. Pulling a flake that is not ready lifts skin that has not finished healing, which is the most common cause of a mark that outlasts the treatment by months.
Week two
Most of the flaking has finished and the skin looks pink rather than raw. Makeup is usually reintroduced around this point, though check with the clinic rather than assuming a date. Pink can persist for several weeks and fades gradually; on some people it lingers longer, particularly after a deeper treatment.
Weeks three to twelve
The visible recovery is over and the useful part begins. Collagen remodelling continues for months, so the result at three months is better than the result at three weeks. Judging the outcome too early is the most common reason people think a treatment underdelivered.
What to actually do
- Cleanse gently with the products the clinic gives you, using fingertips rather than anything abrasive
- Keep the skin occluded with the recommended ointment. Dry healing skin itches more and heals worse
- Stop all actives. No retinoids, acids, vitamin C or exfoliants until you are told otherwise
- Sleep propped up for the first few nights while swelling is at its worst
- Skip the gym, saunas and steam rooms for the first week. Heat and sweat both work against you
- Keep out of the sun entirely, then wear high-factor protection daily for months afterwards
That last point is not routine advice tacked on the end. Newly resurfaced skin pigments readily, and sun exposure during recovery is the fastest way to trade one problem for another.
What is normal, and what is not
Redness, swelling, weeping in the first day or two, itching, bronzing and flaking are all expected. So is the feeling around day three that the whole thing was a mistake, which passes.
Contact the clinic if you develop increasing pain rather than decreasing, spreading redness beyond the treated area, yellow crusting or discharge, a fever, or cold sore blisters. None of those is common and all of them are more easily dealt with early. If you get cold sores, say so before treatment rather than after, since preventative medication is usually given.
When should you book it?
Not in the fortnight before a wedding, a holiday or anything you would rather not attend mid-peel. Two to three weeks of clearance is comfortable, and longer if the event matters.
Autumn and winter suit resurfacing better than summer, for the straightforward reason that avoiding sun for weeks afterwards is easier when there is less of it. Clinics recommend it seasonally for a practical reason rather than a commercial one.
What makes recovery easier or harder
Depth of treatment is the main factor. Beyond that: how well you follow the aftercare, whether you smoke, whether the skin was prepared beforehand, and your general healing. Age plays a part, and so does simply resisting the urge to interfere with the peeling.
People who follow the aftercare closely tend to describe a straightforward week. People who improvise usually do not.
Planning the treatment properly
Recovery is not an afterthought to be discussed on the day. It shapes when the treatment should happen, how deep it should be, and whether resurfacing is the right choice at all against gentler options like LaseMD or Morpheus8, which trade some result for far less downtime.
At Pulse Light Clinic, CO2 resurfacing is carried out on the full face and above. Pulse Light Clinic is CQC-registered and doctor-and-nurse-led, and has been treating skin in London since 2001.
Book a consultation to discuss whether resurfacing suits your skin and how the recovery fits around your diary.
