Fractional Laser in Melbourne: CO₂ Laser for Sun-Damaged Skin

The science of wound healing, renewal and regeneration.

Sun damage goes far deeper than surface pigmentation.It causes structural changes to the dermis: fragmented collagen, disordered elastin, dyschromia, and textural irregularity that no topical can meaningfully reverse. For patients seeking fractional laser treatments, fractional CO₂ laser resurfacing is one of the most effective evidence-based options for skin resurfacing and rejuvenation.

Fractional CO₂ laser is one of the most powerful evidence-based medical-grade laser treatments we have to address these concerns, and one that I am increasingly reaching for in my armamentarium at Skindepth cosmetics. This advanced laser treatment helps resurface the skin, improve skin texture, stimulate collagen production, and reduce visible signs of ageing caused by long-term sun exposure. 

Who Is Fractional CO₂ Laser Suitable For?

Fractional CO₂ laser treatment is commonly recommended for patients wanting to improve sun damage, wrinkles, acne scarring, pigmentation, enlarged pores and uneven skin texture. It can also help stimulate collagen production and improve skin laxity as part of an overall skin rejuvenation treatment plan. During your consultation, your dermatologist will assess your skin type, skin tone and treatment goals to determine whether fractional CO₂ laser is the most appropriate option.

How Fractional CO₂ Laser Resurfacing Works 

Fractional CO₂ laser emits light at 10,600 nm, selectively absorbed by water in skin cells. In fractional mode, it creates thousands of microscopic treatment zones (MTZs) of controlled thermal injury while leaving the surrounding tissue intact. This triggers the skin’s own wound healing cascade across three phases.

This fractional ablative laser technology delivers microscopic laser energy into the skin, encouraging collagen and elastin production while preserving surrounding healthy tissue for faster healing. 

• Inflammatory phase (days 1–5): Release of TGF-β1, PDGF, and IL-1β recruits fibroblasts and initiates repair.
• Proliferative phase (days 5–21): Fibroblasts upregulate type I and III procollagen. Keratinocytes migrate inward from intact surrounding zones, re-epithelialising the surface.
  
• Remodelling phase (months 1–12): Immature collagen matures into organised type I fibres. MMPs clear photo-damaged extracellular matrix — Xu et al. (2011) demonstrated measurable increases in dermal collagen density on histology post-treatment. The ongoing collagen remodelling contributes to healthier, firmer skin and long-term texture improvement and skin tightening.

Fractional CO₂ Laser Treatment Side Effects

Like any laser resurfacing treatment, fractional CO₂ laser treatment involves expected side effects as the skin heals. Most are temporary and resolve with appropriate aftercare.

Expected Side Effects After Fractional Laser Treatment

• Redness and swelling: Universal, peaking days 1–3. Background erythema may persist 4–8 weeks.
• Bronzing and micro-crusting: Treated columns shed between days 5–10 — do not pick or force this.
• Sensitivity: Stinging resolves within hours; sun sensitivity is heightened for several months. Careful post-treatment sun protection is essential throughout the healing process. 
  

Less Common Risks of CO₂ Laser Treatment 

• Post-inflammatory hyperpigmentation (PIH): The key risk, especially in Fitzpatrick III–VI skin. Daily SPF 50+ from day one of healing is non-negotiable. Pre-treatment priming with retinoids and azelaic acid reduces risk. Your skin type and skin tone are carefully assessed during your consultation to minimise this risk and develop a personalised treatment plan.
• HSV reactivation: Antiviral prophylaxis is prescribed routinely for anyone with a history of cold sores.
• Scarring: Rare with appropriate patient selection and experienced technique.
  

Fractional Laser Recovery and Downtime 

• Days 1–3: Red, swollen, socially restricted. Skin care limited to gentle cleanser and bland emollient.
• Days 4–7: Bronzing and peeling. Most patients can go out with mineral SPF and tinted coverage by day 7.
• Weeks 2–4: Pink, sensitive skin. Active ingredients on hold until week 3–4. Most patients are back in social and work settings by end of week 2. While fractional laser recovery varies depending on the intensity of the treatment and treatment area, most patients notice progressive improvements as healing continues. 
  

Expected Results from Fractional CO₂ Laser Treatment

Results improve for up to 12 months as remodelling continues. Patients can expect:

• Pigmentation: Solar lentigines and actinic dyschromia respond well to epidermal ablation, which removes pigment directly, making laser for sun damage one of the gold standard treatments for improving uneven pigmentation
• Texture and pores: Significant improvement in surface roughness and pore appearance as new dermis is laid down. Fractional CO₂ laser resurfacing can also improve skin texture, acne scarring, and overall skin rejuvenation.
• Lines and laxity: Immediate collagen contraction plus ongoing neocollagenesis improves rhytides and firmness — Manstein et al. (2004) demonstrated durable improvements in photo-aged skin. Patients commonly notice softer wrinkles and fine lines, together with improved skin tightening.
• Longevity: Results last several years with medical-grade maintenance (retinoids, antioxidants, SPF). Photoprotection is the single most important factor in preserving your investment.
  

I recently underwent fractional CO₂ treatment myself for sun damage and rejuvenation. The downtime is real, but the results, when paired with rigorous photoprotection and a medical-grade routine, are genuinely transformative.

Fraxel vs Fractional CO₂ Laser: Which Is Right for You?

Whether you are considering Fraxel treatments or CO₂ laser options, choosing the right technology depends on your skin concerns, skin type, and treatment goals. While Fraxel laser and fractional CO₂ laser are both forms of fractional laser resurfacing, they use different laser wavelengths and are suited to different indications.

A specialist consultation will determine the most appropriate laser treatment for optimal results. 

A consultation with a specialist dermatologist is essential. Not all devices, settings, or skin types are equal, and it is important to consult a dermatologist before undergoing this treatment. 

Our approach at Skindepth begins with a thorough consultation to assess your skin concerns, skin type and treatment goals before developing a personalised treatment plan for safe and effective fractional CO₂ laser treatment.

Frequently asked questions

Is fractional CO₂ laser better than Fraxel for sun damage?

Neither treatment is universally better, as they address different skin concerns. Fractional CO₂ laser is generally more effective for significant sun damage, deeper wrinkles and acne scarring because it is an ablative laser. A dermatologist can recommend the most suitable option based on your skin type, goals and expected downtime.

How many fractional CO₂ laser treatments will I need?

Most people achieve noticeable improvement after a single fractional CO₂ laser treatment. However, deeper sun damage, acne scars or advanced signs of ageing may require multiple sessions for optimal results. Your dermatologist will recommend a personalised treatment plan during your consultation.

Can fractional CO₂ laser remove sun spots permanently?

Fractional CO₂ laser can effectively remove many sun spots and areas of pigmentation caused by sun damage. However, new pigmentation may develop if your skin continues to receive ultraviolet exposure. Wearing daily broad-spectrum SPF and practising sun protection helps maintain your results for longer.

When can I wear makeup after fractional CO₂ laser treatment?

Most patients can begin wearing mineral makeup once the skin has fully re-epithelialised, usually around one week after treatment. Your dermatologist will advise when your skin has healed sufficiently. Applying makeup too early may increase irritation and interfere with the healing process.

Can fractional CO₂ laser treat acne scars and wrinkles at the same time?

Yes, fractional CO₂ laser can improve acne scars and wrinkles during the same treatment. The laser stimulates collagen production while resurfacing damaged skin, helping improve texture and firmness. Many patients choose it because it addresses multiple skin concerns in a single procedure.

Is fractional CO₂ laser suitable for darker skin tones?

Fractional CO₂ laser can be suitable for some darker skin tones, but careful assessment is essential. People with higher Fitzpatrick skin types have a greater risk of post-inflammatory hyperpigmentation after treatment. A specialist dermatologist can determine whether treatment is appropriate and recommend strategies to minimise this risk.

How long do the results of fractional CO₂ laser last?

Results from fractional CO₂ laser can last for several years with appropriate skin care and sun protection. Collagen remodelling continues for months after treatment, providing ongoing improvements. Using medical-grade skincare and wearing SPF daily helps preserve your long-term results.

How should I prepare for a fractional CO₂ laser consultation?

Before your consultation, be prepared to discuss your medical history, medications, previous skin treatments and treatment goals. Your dermatologist will examine your skin type, assess your concerns and explain the expected benefits, risks and recovery. This assessment helps create a safe and personalised treatment plan.