Acne scars are permanent textural changes that occur in the skin as a result of severe or prolonged acne inflammation. When acne lesions damage the skin’s deeper layers, the body attempts to heal the area by producing collagen. However, if too little or too much collagen is produced, it can result in uneven healing and visible scarring.
There are several types of acne scars:
These scars often do not respond to over-the-counter products and require professional treatments such as laser resurfacing or regenerative procedures to achieve visible improvement.
Fractional CO2 Laser is a clinically proven resurfacing treatment offered at our aesthetic clinic in Singapore. It targets deep layers of the skin to remodel scarred tissue and stimulate new collagen production. The laser creates precise microthermal zones that trigger a natural wound-healing response, encouraging skin renewal while preserving surrounding healthy skin for faster recovery.
This treatment is particularly effective for depressed acne scars such as:
Over time, collagen fills in the depressions, resulting in smoother, more even skin texture. Many patients in Singapore choose this treatment for its long-term effectiveness in acne scar reduction and skin rejuvenation.evere acne scarring who are looking for long-term improvement through skin resurfacing.
The eCO2 laser, available at our clinic in Singapore, utilises Controlled Chaos Technology (CCT™) — a proprietary scanning system designed to maximise safety and effectiveness. By delivering energy in a randomised pattern, CCT™ helps prevent overheating of surrounding skin tissues, which promotes faster healing and reduces the risk of side effects.
During the procedure, the laser creates Micro-Ablative Columns (MACs) — tiny, targeted zones of thermal injury that penetrate the skin. These microscopic wounds activate the body’s natural healing response, stimulating new collagen production and encouraging skin cell renewal.
This controlled resurfacing process:
The combination of advanced laser engineering and precise energy delivery makes eCO2 a powerful and effective tool for skin rejuvenation and acne scar treatment.
Fractional CO2 Laser is a clinically proven acne scar treatment that helps to resurface damaged skin and stimulate natural collagen regeneration. At our clinic in Singapore, we commonly recommend this procedure for patients who have moderate to severe acne scarring and are seeking long-term skin improvement.
Benefits of Fractional CO2 Laser treatment include:
Because only a fraction of the skin is treated at each session, recovery is faster compared to traditional fully ablative lasers — while still offering effective and measurable results. Most patients in Singapore who undergo this treatment experience visible improvement after just a few sessions.
Fractional CO2 Laser treatment is ideal for individuals looking to improve the appearance of moderate to severe acne scars, particularly those that are depressed or textural in nature. At our clinic in Singapore, we assess each patient’s skin condition thoroughly to determine if laser resurfacing is appropriate based on scar type, skin tone, and healing capacity.
You may be a good candidate for this treatment if you:
Fractional CO2 Laser is suitable for a wide range of skin types, although patients with darker skin tones may require more conservative settings to reduce the risk of post-inflammatory hyperpigmentation. A detailed skin consultation will help us tailor the treatment plan to your unique skin needs and ensure optimal results.
Before each session, a strong numbing cream is applied for 20 to 30 minutes to minimise discomfort during the procedure. At our clinic in Singapore, every session is performed by Dr Edwin with precise technique to ensure both safety and effectiveness.
Each Fractional CO2 Laser treatment is carried out in two parts:
Immediately after the procedure, the skin will appear red and slightly swollen, with the formation of tiny scabs where the micro-ablative columns were delivered. This is part of the normal healing process as new collagen and skin cells are generated.
Downtime typically lasts about 5 to 7 days, depending on the intensity of the treatment and individual healing speed. Most patients return to work after a week, though sun protection and gentle skincare are crucial during this period.
Dr Edwin recommends the following for best results:
It’s important to understand that visible results take time. Fractional CO2 Laser is not a one-off solution. Most patients in Singapore require multiple sessions — spaced about 4 weeks apart — to achieve significant, long-lasting improvements in their acne scars.
Both CO2 Fractional Laser and Pico Fractional Laser are used in Singapore to treat acne scars, but they differ in mechanism, depth of penetration, recovery time, and effectiveness for certain scar types.
Here’s how they compare:
| Feature | CO2 Fractional Laser | Pico Fractional Laser |
|---|---|---|
| Mechanism | Ablative laser that vaporises micro-columns of skin to trigger collagen production | Non-ablative laser using photoacoustic effect to stimulate collagen |
| Depth of Penetration | Deeper, reaches dermis | Shallower penetration |
| Effectiveness | More effective for moderate to severe depressed scars (ice pick, boxcar, rolling) | Mild to moderate acne scars, post-acne redness, and pigmentation |
| Downtime | 5 to 7 days with visible redness and scabbing | Minimal downtime (1–2 days) with mild redness |
| Pain Level | Moderate discomfort (numbing required) | Generally well tolerated |
| Number of Sessions | Fewer sessions needed (3–5 on average) | More sessions may be required (5–8+) |
At our Singapore clinic, both treatment options are available and often used in combination depending on scar severity, skin type, and desired recovery time. During consultation, Dr Edwin will assess your skin and advise on the most appropriate treatment or combination plan for your specific acne scars.
Acne scarring often involves a mix of scar types — from deep rolling scars to surface pigmentation and red marks. To achieve optimal results, a personalised combination approach is typically needed. At our clinic in Singapore, Dr Edwin frequently combines Fractional CO2 Laser with complementary treatments to target various layers of skin damage and accelerate healing.
Subcision is a minor surgical procedure used to treat tethered scars, especially rolling and deep boxcar scars. A fine needle is inserted beneath the skin to release fibrous bands that pull the scar downward. Once these bands are released, the skin is able to lift and remodel. Subcision is often performed just before CO2 Laser treatment for enhanced scar correction.
Polynucleotide (PN) injections—commonly known as the salmon DNA treatment and widely used in Korean medical aesthetics—are regenerative injectables designed to support skin healing and improve acne scar outcomes. These DNA-based molecules stimulate fibroblast activity, enhance collagen remodeling, and promote tissue regeneration, making them especially useful in scar recovery after energy-based treatments.
One of the most recognisable formulations used in clinical practice is often referred to as “Polynucleotide Scar,” known for its signature blue box packaging. It is frequently incorporated into acne scar treatment protocols across Asia due to its targeted skin-repair properties.
When used in combination with fractional CO₂ laser resurfacing or subcision, PN injections help reduce inflammation, minimise downtime, and improve wound healing—particularly for patients with sensitive skin, delayed recovery, or a tendency to develop post-inflammatory hyperpigmentation (PIH). This synergistic approach enhances collagen regeneration and improves long-term scar revision results.
For patients with lingering red acne marks (post-inflammatory erythema) or brown pigmentation (post-inflammatory hyperpigmentation), Dr Edwin may incorporate Pico Laser or Yellow Laser treatments. These non-ablative lasers target excess melanin and superficial blood vessels without affecting surrounding tissue. They can be performed between CO2 Laser sessions to address discoloration and further improve skin clarity.
This dual-action injectable combines hyaluronic acid with a collagen-stimulating compound to address atrophic acne scars—particularly in patients with thin, fragile, or crepey skin. It offers both immediate hydration and gradual dermal remodeling by stimulating collagen synthesis over time.
Commonly incorporated into Korean acne scar protocols, this injectable is especially effective for rolling scars and shallow depressions that do not respond fully to laser resurfacing alone. By reinforcing the skin’s structural matrix and improving elasticity, it enhances textural refinement and supports longer-term scar correction.
When used in combination with CO₂ laser resurfacing or subcision, this treatment contributes to smoother skin texture, improved skin density, and more comprehensive scar resolution.
Selecting the right clinic for acne scar treatment is essential to achieving safe, long-lasting results. With many clinics in Singapore offering various laser and injectable options, it’s important to choose a provider with the right expertise, technology, and patient-centred approach.
Here are key factors to consider:
At Edwin Lim Medical Aesthetic Clinic, we are committed to delivering personalised, medically sound treatment plans for acne scars. Each case is assessed in detail, and combination treatments are recommended based on clinical evidence and your skin’s unique needs.
Struggling with stubborn acne scars? Let us help you achieve long-term skin improvement with customised laser treatments and combination therapies.
Schedule a personalised consultation with Dr Edwin to assess your skin and create a targeted acne scar treatment plan that suits your goals.
Book a consultation with us today.
Most patients in Singapore require 3 to 5 sessions, spaced approximately 4 to 6 weeks apart, to achieve noticeable improvement in acne scar depth and overall skin texture. The exact number of sessions depends on your scar severity, skin type, and individual healing response.
A strong numbing cream is applied before the procedure to reduce discomfort. Most patients describe the sensation as a warm prickling or mild stinging feeling. At our clinic in Singapore, each procedure is performed by Dr Edwin using precise, controlled techniques to ensure comfort and safety.
Most patients experience 5 to 7 days of downtime. The skin may appear red, feel tight, and develop tiny scabs where the laser was applied. You may resume normal activities after a week with appropriate skincare and sun protection.
Improvements typically begin after the first or second session. However, full results build gradually over 3 to 6 months as your skin continues to remodel collagen. Consistency and patience are key to achieving optimal outcomes.
CO2 laser is especially effective for depressed acne scars such as ice pick scars, boxcar scars, and rolling scars. For best results, we often combine CO2 laser with other treatments such as subcision, Rejuran Scar, or Juvelook to target different scar depths and improve overall skin quality.
This treatment is generally suitable for lighter to medium skin tones. For patients with darker skin, settings may be adjusted to reduce the risk of post-inflammatory hyperpigmentation. A personalised skin assessment is essential to ensure safety and suitability.
We advise patients to start using a medical-grade vitamin C serum and anti-pigmentation cream at least two weeks prior to treatment. This helps strengthen the skin and reduce the risk of pigmentation. After your session, Dr Edwin will prescribe an intensive recovery cream to support healing and reduce redness.
CO2 laser is an ablative treatment that resurfaces the skin and is more effective for moderate to severe depressed acne scars. Pico laser is non-ablative and better suited for treating post-acne pigmentation and mild scarring. In many cases, we combine both lasers to target different layers of skin damage for more comprehensive results.
Yes. At our Singapore clinic, we often combine CO2 laser with subcision, Rejuran Scar, Juvelook, and pigment-targeting lasers such as Pico or Yellow laser. This multi-modal approach allows us to address different types of scars and skin issues more effectively.
The best way to find out is through a detailed consultation and skin assessment. Factors such as scar type, depth, skin tone, and healing capacity all influence whether CO2 laser is the most suitable option. Dr Edwin will recommend a personalised plan tailored to your specific skin needs and goals.
Once acne scars are treated, they typically do not return unless new breakouts occur and lead to new scarring. To maintain results, it’s important to control active acne, follow proper skincare, and attend maintenance sessions if needed.
