CO₂ Laser for Sun Damage: 7 Facts to Know Before Treatment

CO₂ resurfacing does more than brighten the surface. It removes tiny columns of damaged tissue and creates controlled heat below the surface. This starts repair and collagen remodeling. Because the treatment is strong, it needs more planning than a light facial or superficial peel.

1. CO₂ Laser Can Improve Sun Damage, but “Sun Damage” Is Not One Diagnosis

Sun damage can show up as fine lines, rough texture, uneven tone, age spots or looser skin. It can also include actinic keratoses. Fractional CO₂ is most useful when photoaging includes texture change and wrinkles, not just discoloration.

Clinical studies support this. In one study of 45 patients with moderate to severe photoaging, two to three fractional ablative treatments improved texture, laxity, uneven color and overall appearance. Other studies have also found improvement in sun-damaged skin.

But a few isolated brown spots may be treated more efficiently with a pigment-focused option such as Pico laser or IPL. The right device depends on what the skin actually needs.

2. Fractional CO₂ Is Different From Fully Ablative CO₂

Traditional fully ablative CO₂ removes the entire treated surface layer. Fractional CO₂ creates many microscopic treatment columns while leaving small bridges of untreated skin between them.

Those untreated areas help the skin heal faster. Even so, fractional CO₂ still removes tissue and creates heat, so it is not a no-downtime procedure. Settings can vary a lot. Energy, density, number of passes and treatment area all change how strong the session is.

3. Not Every “Sun Spot” Should Be Lasered Without a Diagnosis

Long-term UV exposure can produce benign age spots, but it can also produce actinic keratoses, which are precancerous growths, and skin cancers.

The American Academy of Dermatology advises checking rough, scaly or changing sun-damaged spots. Some actinic keratoses can become squamous cell carcinoma. Cosmetic resurfacing should not hide a lesion that first needs a diagnosis.

If your concern is mainly pigmentation, our brown spot guide explains the difference between sun spots, melasma and post-inflammatory hyperpigmentation.

4. Downtime Is Usually Longer Than 3 to 5 Days

The old version of this article suggested that most patients are back to normal social activity within 3 to 5 days. That can be too optimistic for a meaningful fractional CO₂ treatment.

Skin Works currently advises patients to plan for about 5 to 7 days of visible healing. Redness, warmth, swelling, flaking and sensitivity are common early on. The skin may keep healing, and some pinkness may last longer.

You may feel ready to work from home before you are ready for a close-up event or photos. If timing matters, plan around the deeper end of the recovery range rather than the shortest possible one.

For a more detailed day-by-day explanation, see our CO₂ laser recovery guide.

5. One Treatment May Help, but More Is Not Always Better

Some patients improve after one fractional CO₂ treatment. Others need a short series, especially for deeper wrinkles, acne scars or more widespread photoaging.

There is no universal “three sessions” rule. Stronger settings may create more change in one visit, but they also increase downtime and risk. Lighter settings may need a series.

The best plan balances the amount of correction you want with your skin type, healing history and tolerance for downtime.

6. Skin Tone Changes the Risk Calculation

Darker skin can be treated with fractional CO₂, but pigment change needs extra attention. A 2023 review found that post-inflammatory hyperpigmentation after CO₂ treatment varies widely between studies and is linked to inflammation.

That does not mean CO₂ is only for light skin. It means patient selection, settings, sun exposure, aftercare and provider experience matter more when pigment risk is higher.

If you have a history of melasma or PIH, tell your provider before treatment. Sometimes a different laser, a gentler plan or pigment control before resurfacing is the safer choice.

7. Results Can Last for Years, but New Sun Damage Can Still Form

CO₂ resurfacing changes the treated skin. It does not simply “wear off” on a fixed schedule. Studies have found that improvement can remain visible for years in selected patients.

But the treatment does not stop aging or future UV damage. New spots, wrinkles and texture changes can still develop after treatment.

Daily broad-spectrum SPF 30 or higher, shade, protective clothing and avoiding tanning are the most important ways to protect the result. The AAD also emphasizes ongoing sun protection because UV exposure continues to damage skin even after treatment.

What About Isotretinoin and CO₂ Laser?

The old article used a blanket rule that anyone who had taken Accutane within 6 months should avoid treatment. Current evidence is more nuanced.

A systematic review and expert consensus found too little evidence to support a routine 6-month delay before fractional ablative laser after isotretinoin. Fully ablative resurfacing is different and is approached more cautiously. Your medication history should still be reviewed before treatment.

How Much Does Fractional CO₂ Cost at Skin Works?

As of September 2026, Skin Works lists standard Torrance pricing of $1,800 for the face, $1,700 for the neck, $1,700 for the chest and $2,800 for face plus neck. Pricing can change, so confirm current rates before purchase.

For the full breakdown of CO₂ and Erbium pricing, see our laser resurfacing cost guide.

Questions Worth Asking Before You Book

Ask what problem the provider believes they are treating, whether the plan is fractional or fully ablative, what density and depth are expected, how many days of visible healing they expect for those settings, how your skin tone changes the pigment risk, whether any spots need medical evaluation first, and whether a less aggressive treatment could meet the same goal.

For current Skin Works treatment details, visit the fractional CO₂ laser treatment page.

Frequently Asked Questions