CO2 laser resurfacing typically takes 1 to 2 weeks for the initial skin healing, but full recovery, including the fading of residual redness, can stretch to several months. The exact timeline depends on whether you had a traditional fully ablative treatment or a fractional treatment, which leaves tiny columns of untouched skin between the treated zones and heals faster.
The First Two Weeks: Active Healing
The first few days after CO2 laser treatment are the most intense. Your skin will look raw, swollen, and feel like a sunburn. You’ll leave the office with the treated area covered in petroleum jelly or an antibacterial cream and wrapped in a bandage. For the first several days, expect oozing and significant tenderness.
By days 3 to 5, the oozing slows and a crust begins forming over the treated skin. This is normal and part of re-epithelialization, the process where new skin cells migrate across the wound surface. The temptation to pick at crusts or peeling skin is strong, but pulling them off prematurely can cause scarring or infection. Let them shed on their own.
Around days 5 to 7 with fractional CO2, or days 7 to 10 with a more aggressive fully ablative treatment, the crusts fall away and new pink skin is visible underneath. By the end of week two, most people have a closed, intact skin surface. The skin looks noticeably pink or red at this stage, but the raw, open-wound phase is over.
Redness That Lingers for Months
Once the surface heals, you’ll notice persistent pinkness or redness that can be surprisingly long-lasting. Published data in dermatologic surgery literature puts the typical range at 2 to 12 weeks, though some researchers have found an average duration closer to 4.5 months. Lighter skin tones tend to show this redness more visibly, while darker skin tones face a different concern: post-inflammatory hyperpigmentation, where the treated areas darken rather than redden. This darkening can also take months to resolve.
The redness gradually fades on its own as the deeper layers of skin remodel. Wearing broad-spectrum sunscreen daily during this period is critical, because UV exposure can worsen both redness and pigmentation changes and make them last significantly longer.
What Daily Wound Care Looks Like
During the active healing phase, your routine revolves around gentle cleansing and keeping the skin moist. Memorial Sloan Kettering’s post-treatment protocol calls for alternating washes: diluted white vinegar and water (1 tablespoon of vinegar per cup of water) for one wash, then liquid soap and water for the next. A common schedule is vinegar in the morning and soap at night.
After each wash, you reapply whatever ointment your provider prescribed and cover the area with a fresh bandage. Plan on changing this dressing twice a day. One of the most important rules during this window is to avoid applying any product your provider didn’t specifically recommend. Over-the-counter creams, serums, natural oils, and other skincare products can interfere with healing, even ones you’d normally consider gentle. Stick to only what you were told to use until you’re cleared to resume your regular routine.
When You Can Return to Normal Life
Most people need to plan for about 7 to 14 days of social downtime, meaning you won’t want to be seen in public or at work while your skin is crusting and peeling. If you had a lighter fractional treatment on a small area, you may feel comfortable going out sooner with mineral makeup to cover the redness, but only once the surface has fully closed and your provider gives the go-ahead. Applying makeup to skin that’s still open or crusting invites infection.
Exercise is another activity to time carefully. Sweating irritates healing skin and introduces bacteria, so most providers recommend waiting at least 7 to 10 days before resuming workouts. Swimming pools, hot tubs, and saunas should be avoided even longer because of the bacterial exposure risk. Direct sun exposure is the biggest long-term threat to your results. Even after the initial healing is complete, unprotected sun can cause lasting pigment changes on the newly resurfaced skin for months afterward.
Factors That Affect Your Timeline
Not everyone heals on the same schedule. The single biggest variable is the intensity of the treatment. A deep, fully ablative CO2 laser that removes the entire skin surface takes longer to heal than a fractional treatment, which creates a grid-like pattern of tiny treatment zones separated by untouched skin. The untouched skin acts as a reservoir of healthy cells that speeds up recovery. Fractional treatments tend to sit at the shorter end of the 1 to 2 week window, while fully ablative treatments push toward the longer end or beyond.
The size and location of the treated area also matters. A small patch on the cheek heals faster than a full-face treatment. Skin around the eyes and mouth, which is thinner, can take slightly longer and be more prone to swelling. Your overall health plays a role too. Smokers heal more slowly because nicotine restricts blood flow to the skin. People with diabetes or immune conditions may also experience a longer recovery. If you have a history of cold sores, the trauma of laser resurfacing can trigger an outbreak on the face, which your provider will typically prevent with antiviral medication started before the procedure.
Signs of a Problem
Some discomfort, swelling, oozing, and redness are completely expected in the first week. What isn’t normal: increasing pain after the first few days instead of improving, yellow or green discharge (clear or slightly blood-tinged oozing is fine early on), fever, or skin that looks like it’s getting worse rather than better after day 5. These can signal infection, which needs prompt treatment to prevent scarring. Redness that intensifies or spreads beyond the treated area, rather than gradually fading, is another red flag worth contacting your provider about quickly.