CO2 Laser vs. Aerolase: Which Skin Treatment Is Better?

When patients start researching laser treatments, one of the most common questions is whether CO2 laser or Aerolase is the better choice.

The answer depends on what you want to treat, how much downtime you can tolerate, and how your skin responds to heat and inflammation. These treatments are not interchangeable. In many cases, one is clearly a better fit than the other.

At Xthetics in Calgary, Taryn Kallio takes a personalized approach to skin treatment, with a focus on acne, pigmentation, redness, signs of aging, skin-barrier health, and long-term skin function. Xthetics describes Taryn as a Calgary-based Aerolase Specialist | medical aesthetician who uses advanced technologies including Aerolase laser treatments, microneedling, and corrective facials, with a particular interest in melanin-rich skin. 

The short answer

In general:

• CO2 laser is usually the more aggressive option for texture, deeper acne scarring, and more significant resurfacing. It can deliver stronger results, but it also comes with substantially more downtime and a higher risk profile. CO2 resurfacing is used for wrinkles, scars, and other textural concerns, and healing can take days to weeks depending on treatment depth. 
• Aerolase is typically the more versatile, lower-downtime option for concerns like redness, acne, pigment, early rejuvenation, and patients who want a gentler treatment path. Aerolase states that its 1064 nm Nd:YAG platforms are used across Fitzpatrick I–VI skin types and are commonly used for acne, melasma, rosacea, and skin rejuvenation with little to no social downtime. 

That means if your main issue is severe acne scarring or advanced texture, CO2 may be the better option. If your main issue is active acne, redness, sensitive skin, pigmentation concerns, or a desire for minimal downtime, Aerolase is often the better place to start. This is an inference based on the treatment mechanisms, indications, and recovery profiles described in the sources.

What is a CO2 laser?

A carbon dioxide (CO2) laser is an ablative resurfacing laser. It works by targeting water in the skin and vaporizing columns or layers of tissue, which triggers wound healing and collagen remodeling. CO2 resurfacing is commonly used for photoaging, fine lines, wrinkles, and acne scarring, and can improve skin texture more aggressively than lower-downtime options. 

Because it is ablative, CO2 laser treatment generally involves:

• more redness, swelling, and peeling
• a longer recovery period
• stricter aftercare
• higher risk of post-inflammatory pigment changes in the wrong candidate or with the wrong settings 

The American Society for Dermatologic Surgery notes that laser resurfacing patients may need wound care and dressing changes, with healing taking roughly 3 to 10 days depending on treatment depth, while acne-scar resurfacing can involve 10 to 21 days of healing depending on the treated area and extent.

What is Aerolase?

Aerolase is a laser platform best known for its 1064 nm Nd:YAG technology. Aerolase is used to treat concerns such as acne, melasma, rosacea, redness, and skin rejuvenation, and treatments are designed to work across all Fitzpatrick skin types, including darker skin tones, with minimal or no social downtime. 

Its 1064 nm platform is used with short pulse durations, no required cooling, and is intended to treat multiple concerns while minimizing surface injury. Patients require a series of 4 to 6 sessions spaced a few weeks apart, depending on the condition being treated. 

In practical terms, Aerolase is often chosen when patients want to target:

• acne and post-acne inflammation
• facial redness or rosacea-prone skin
• pigment irregularities
• early signs of aging
• overall skin rejuvenation with minimal interruption to daily life 

CO2 laser vs. Aerolase: the biggest differences

1) Downtime

This is usually the biggest decision point.

CO2 laser is the more downtime-heavy treatment. Fractional CO2 resurfacing often requires about 4 to 10 days of recovery, while deeper or full-field resurfacing can require longer. Patients can experience swelling, stinging, peeling, redness, and extended healing. 

Aerolase is positioned as a minimal-downtime treatment. Aerolase has zero social downtime on its device page. 

If you cannot realistically disappear for a week or more, CO2 may not be the right first-line choice.

2) Skin concerns treated best

CO2 laser is often better for:

• deeper textural concerns
• etched-in lines
• more significant acne scarring
• resurfacing skin that needs stronger collagen remodeling 

Aerolase is often better for:

• active acne
• redness and rosacea-prone skin
• pigment concerns
• overall rejuvenation with less inflammation and downtime 

This is why the right consultation matters. A patient searching for “best laser for acne scars” may assume CO2 is automatically best, but that is not always true if they also have active acne, significant redness, melanin-rich skin, or a low tolerance for downtime.

3) Skin tone and risk profile

This is a major clinical consideration.

The ASDS notes that patients with very dark skin are generally not considered ideal candidates for traditional laser resurfacing, and CO2 resurfacing literature also highlights the risk of post-inflammatory hyperpigmentation and the need for careful selection and pretreatment. 

By contrast, Aerolase states that its 1064 nm platforms are designed for Fitzpatrick I–VI and are suitable for darker skin tones when used appropriately. Xthetics also notes that Taryn Kallio has a special interest in melanin-rich skin and in treating hyperpigmentation and uneven tone with safe, effective approaches. 

For that reason, skin tone is not a small detail in this comparison. It can materially change which treatment is safer and more appropriate.

4) Treatment experience

In general, CO2 laser is more intense. Patients should expect more aftercare and more healing time. CO2 resurfacing sources describe dressing changes, ointment use, peeling, swelling, and strict sun avoidance after treatment. 

Aerolase is usually positioned as the more comfortable and lower-disruption option. Aerolase states that its laser treatments do not require cooling and are designed to remain comfortable while avoiding significant surface damage. 

Is CO2 laser better than Aerolase for acne scars?

Sometimes yes, but not always.

CO2 laser has strong evidence and longstanding use for acne scar remodeling, especially where texture is the main problem and the patient can tolerate downtime. CO2 resurfacing can effectively reduce acne scarring by stimulating collagen production and blending scar edges into surrounding skin. 

But “better” depends on the full clinical picture. If you still have active acne, persistent redness, sensitive skin, or a higher risk of pigmentation changes, a lower-downtime option may be more appropriate initially. Aerolase’s 1064 nm laser platforms are used for acne and inflammation-related concerns and are often part of a gradual treatment plan rather than a single aggressive resurfacing event. 

A common real-world approach is that patients first improve inflammation, redness, and active breakouts, and only then consider whether a more aggressive resurfacing treatment is actually necessary.

Is Aerolase better than CO2 for redness and rosacea?

In many cases, yes.

Aerolase specifically markets its 1064 nm technology for rosacea, redness, and vascular-related concerns, and states that it can treat these concerns with minimal downtime. 

CO2 laser is not usually the treatment people think of first for redness-prone or reactive skin because its strength is resurfacing, not gentle vascular or inflammatory management. That does not mean CO2 has no place in rejuvenation, but it does mean that for a patient whose main complaint is facial redness, flushing, or sensitivity, Aerolase is often the more intuitive fit based on how the technologies are used. This is an inference grounded in the cited indications and recovery profiles. 

What about melasma and pigmentation?

This is where patients should be especially careful about self-diagnosing.

Melasma is notoriously easy to worsen with the wrong heat-based treatment. The American Academy of Dermatology advises that melasma should be evaluated carefully because treatment depends on the correct diagnosis, and reviews of laser therapy for melasma note that some laser strategies can worsen pigment or trigger rebound pigmentation.That is one reason local expertise matters. At Xthetics, Taryn’s profile specifically notes her interest in treating pigmentation, inflammation, and uneven tone, including in melanin-rich skin. 

Who may not be a good candidate for CO2 laser?

CO2 laser is not for everyone.

Published guidance and reviews note that resurfacing may be unsuitable or need to be postponed in patients with:

• active acne
• open wounds or active infection
• a history of herpes outbreaks unless managed appropriately
• recent isotretinoin use
• conditions that impair healing
• elevated risk of pigment complications depending on skin type and history. That does not mean the treatment is unsafe in general. It means it requires proper screening, realistic expectations, and disciplined aftercare.

So which treatment is right for you?

A simplified way to think about it:

Aerolase may be the better fit if you want:

• little to no downtime
• help with acne, redness, pigment, or early rejuvenation
• a treatment plan that is gentler on reactive or melanin-rich skin
• gradual improvement over a series of sessions 

CO2 laser may be the better fit if you want:

• a more aggressive resurfacing treatment
• stronger correction for texture and acne scarring
• improvement in lines and wrinkles
• maximum change, with the understanding that recovery is more involved

Why an in-person consultation matters

Online comparisons are useful, but they cannot assess:

• your skin tone and reactivity
• whether your pigmentation is melasma, PIH, or something else
• whether your barrier is impaired
• whether active acne or inflammation should be treated before resurfacing
• whether combination therapy would outperform a single-device plan

That is why the best treatment is not the most aggressive one. It is the one that matches your skin, your goals, and your healing profile.

At Xthetics in Calgary, Taryn Kallio’s approach centers on personalized, results-driven treatment plans that consider not just the visible concern, but also skin-barrier health, lifestyle factors, and long-term skin function. 

Final takeaway

If you are comparing CO2 laser vs. Aerolase, think of it this way:

• CO2 laser is usually the stronger resurfacing tool for texture and acne scars
• Aerolase is usually the more versatile, low-downtime option for acne, redness, pigmentation, and overall rejuvenation
• the “best” option depends on your skin history, tone, tolerance for downtime, and actual diagnosis 

For many patients, the smartest next step is not choosing a laser online. It is booking a consultation and having your skin assessed properly.

Book a consultation at Xthetics in Calgary to find out whether Aerolase, resurfacing, or a customized treatment plan makes the most sense for your skin goals.

FAQ

Is Aerolase safer than CO2 laser?

Not universally, but Aerolase is generally positioned as a lower-downtime, lower-disruption treatment, especially for acne, redness, and pigment concerns. CO2 laser is more aggressive and can be highly effective, but it also has a longer recovery period and a higher risk of pigment changes in the wrong candidate. 

Does CO2 laser give better results?

For deeper resurfacing, acne scars, and texture, CO2 can produce stronger results. For redness, active acne, pigment, and patients who want minimal downtime, Aerolase may be the better fit.

How much downtime does CO2 laser have?

Depending on the treatment depth, recovery can range from several days to a few weeks. Published sources cite roughly 4 to 10 days for fractional CO2 and longer for deeper resurfacing. 

How many Aerolase treatments do you need?

Many conditions are typically treated in a series of 4 to 6 sessions spaced 2 to 4 weeks apart, though this varies by indication. 

Which laser is better for darker skin tones?

That depends on the exact concern and device settings, but Aerolase states that its 1064 nm platform is designed for Fitzpatrick I–VI, while traditional resurfacing approaches require more caution because of pigment risk.