Ablative laser treatment is a skin resurfacing procedure that uses focused light energy to vaporize the outer layers of skin, prompting the body to replace them with fresh, smoother tissue. It’s one of the most effective single-session treatments available for wrinkles, scars, and sun damage, but it comes with real downtime: most treated areas take 5 to 21 days to heal, with residual redness lasting months.
How Ablative Lasers Work
The laser emits a beam of light that gets absorbed by water molecules in your skin cells. That absorption generates intense heat, which vaporizes the targeted tissue layer by layer. This controlled destruction removes the damaged outer skin (epidermis) and heats the deeper layer (dermis), triggering your body’s wound-healing response. As the skin rebuilds, it produces new collagen and elastin, the proteins responsible for firmness and elasticity.
This process is called selective thermolysis. The laser’s wavelength determines exactly how deep the energy penetrates and how much surrounding tissue gets heated, which is why different laser types produce different results and recovery profiles.
CO2 vs. Erbium Lasers
Two main laser types are used for ablative resurfacing, and they serve slightly different purposes.
CO2 lasers penetrate deeper into the skin and generate more residual heat in the surrounding tissue. That makes them particularly effective for deeper wrinkles, especially around the eyes and mouth, and for more severe scarring. The trade-off is a longer recovery and higher risk of side effects, including pigmentation changes.
Erbium (Er:YAG) lasers take a gentler approach. They remove tissue more precisely with less heat damage to surrounding areas, which lowers the risk of post-treatment darkening. Clinicians often prefer erbium lasers for uneven skin tone and fine wrinkles, reserving CO2 for deeper lines and more significant scarring. Erbium lasers can also treat deeper wrinkles when a CO2 system isn’t available, though they’re considered less efficient for that purpose.
Fractional vs. Fully Ablative
Traditional (fully ablative) lasers treat the entire surface area of the targeted skin. Every bit of the treatment zone gets vaporized. This produces dramatic results but requires significant healing time.
Fractional ablative lasers changed the equation. Instead of treating 100% of the surface, they create thousands of tiny columns of thermal injury, each about one-tenth the width of a hair follicle. Think of it like a TV screen: a fully ablative laser treats every pixel, while a fractional laser treats only a percentage of the pixels and leaves the rest intact. Those untouched areas of healthy skin act as bridges for faster healing.
The result is that fractional ablative lasers deliver much of the resurfacing power of a fully ablative treatment while cutting recovery time significantly. The healthy skin between treatment columns keeps the epidermis functional, so the body can repair itself more quickly. For many patients, fractional ablative has become the default choice because it offers a practical middle ground between aggressive resurfacing and minimal downtime.
What Ablative Lasers Treat
The list of conditions treated with ablative lasers is broader than most people expect. The most common uses are facial wrinkles from sun damage and aging, acne scars, and surgical or traumatic scars. But ablative lasers are also used for precancerous skin patches (actinic keratoses), raised age spots (seborrheic keratoses), warts, skin tags, and a thickened, bumpy nose condition called rhinophyma.
Less common but well-documented uses include keloid scars, certain benign growths, and yellowish cholesterol deposits around the eyes (xanthelasma). The versatility comes from the fact that the laser can be precisely controlled for depth and intensity, making it adaptable to very different skin problems.
What the Procedure Feels Like
Ablative resurfacing is not a “lunchbreak” procedure. Pain management ranges from simple numbing cream for lighter treatments to full sedation for deep, full-face resurfacing. For moderate treatments, many providers use a combination of topical numbing and injected local anesthesia or nerve blocks. Deeper or more extensive sessions may call for conscious sedation, where you’re awake but in a medically relaxed state, or occasionally general anesthesia in a surgical setting.
The level of anesthesia depends on how aggressive the treatment is and how large the area being treated. A small patch of scarring with a fractional laser might need only numbing cream. Full-face CO2 resurfacing is a different experience entirely.
Recovery Timeline
Healing happens in stages. For the first several days, the treated skin is raw, swollen, and oozing. Around days 5 to 7, the skin dries out and begins to peel. New skin forms underneath, and the treated area gradually closes up. Most people see full re-epithelialization (new skin covering the wound) within 5 to 21 days, depending on the laser type and intensity used.
Once the new skin appears, it will look noticeably pink. This redness fades gradually over two to three months for most people, though it can persist for six months to a full year in some cases. During this period, the new skin is especially vulnerable to sun damage and hyperpigmentation, so consistent sun protection is essential.
Risks and Complications
Ablative laser resurfacing is generally safe when performed by an experienced provider, but it carries real risks worth understanding before committing.
Hyperpigmentation (darkening of the treated skin) occurs in roughly 5 to 7% of patients, with significantly higher rates in people with medium to dark skin tones (Fitzpatrick types III through VI). Hypopigmentation, where the treated skin becomes lighter than surrounding areas, affects about 3% of patients and can be permanent.
Infection is another concern. Bacterial infections occur in about 6.5% of resurfacing cases. Herpes simplex virus reactivation happens in roughly 2 to 7% of patients, including some who had no known history of cold sores. Providers typically prescribe antiviral medication before the procedure to reduce this risk.
Hypertrophic scarring, where the healing process produces raised, thickened scars, is rare at about 0.9% of cases but is the most dreaded complication of an elective cosmetic procedure. Risk factors include excessive treatment depth, overlapping laser passes, infection during healing, and a personal tendency toward keloid scarring. Prolonged redness beyond the normal timeline is an early warning sign.
How It Compares to Non-Ablative Lasers
Non-ablative lasers heat the deeper layers of skin without removing the surface. They stimulate collagen production with minimal downtime, but the results are more subtle and typically require multiple sessions to achieve noticeable improvement. Ablative lasers produce more significant changes in a single treatment because they physically remove damaged tissue and trigger a much stronger healing response.
Fractional ablative lasers have blurred this line somewhat. By treating only a fraction of the skin’s surface while still reaching both the outer and deeper layers, they deliver resurfacing results closer to fully ablative treatment but with a recovery timeline closer to non-ablative procedures. For many patients with moderate concerns, fractional ablative has become the sweet spot.
Cost
The average cost of laser skin resurfacing is $1,829, according to the American Society of Plastic Surgeons. That figure covers only the procedure itself, not anesthesia, facility fees, or post-treatment care products. Actual prices vary widely based on geographic location, the provider’s experience, the type of laser used, and the size of the treatment area. Full-face CO2 resurfacing at a specialist practice in a major city can run several thousand dollars, while a small targeted treatment with an erbium laser may cost considerably less.
Most insurance plans do not cover ablative laser resurfacing when it’s performed for cosmetic reasons. Treatments for precancerous lesions or medically necessary scar revision may have partial coverage, depending on the plan.