Acne scars can be a persistent and frustrating skin concern, affecting both appearance and self-confidence. Among the many treatments available, laser therapy is one of the most effective options. But a common question remains: Are the results permanent?
This in-depth guide explores:
- How laser treatments work on acne scars
- Different types of lasers and their effectiveness
- Factors influencing long-term results
- Maintenance and complementary treatments
- Realistic expectations and limitations
Understanding Acne Scars: Types and Challenges
Before discussing lasers, it’s essential to understand the different types of acne scars, as each responds differently to treatment.
- Atrophic Scars (Depressed Scars)
These are the most common and occur when the skin fails to regenerate tissue after severe acne. They include:
- Icepick scars – Deep, narrow pits
- Boxcar scars – Wider, U-shaped depressions
- Rolling scars – Wavy, uneven texture
- Hypertrophic and Keloid Scars (Raised Scars)
These form due to excess collagen production during healing and are more common on the chest, back, and jawline.
- Post-Inflammatory Hyperpigmentation (PIH) & Erythema (Redness)
While not true scars, discoloration can persist after acne and may be treated with certain lasers.
How Do Lasers Treat Acne Scars?
Laser treatments work by removing damaged skin layers, stimulating collagen, and promoting skin remodeling. The two main categories are:
- Ablative Lasers (More Invasive, Stronger Results)
- CO₂ Laser – Removes outer skin layers, effective for deep scars.
- Erbium YAG Laser – Less aggressive than CO₂, better for superficial scars.
- Best for: Severe atrophic scars, but requires longer downtime.
- Non-Ablative Lasers (Less Downtime, Gradual Improvement)
- Fraxel (Fractional Laser) – Targets deeper layers without damaging the surface.
- Nd:YAG Laser – Good for darker skin tones to avoid pigmentation issues.
- Best for: Mild to moderate scars, with multiple sessions needed.
- Other Laser & Energy-Based Treatments
- Pulsed Dye Laser (PDL) – Reduces redness in keloid scars.
- Radiofrequency (RF) Microneedling – Combines needles with RF energy for collagen stimulation.
Are Laser Results Permanent?
While lasers can provide long-lasting improvements, several factors determine whether results are truly permanent:
- Depth and Type of Scar
- Deep icepick scars may require multiple treatments and may not fully disappear.
- Rolling scars respond well but may need maintenance.
- Skin Type and Healing Ability
- Darker skin tones risk hyperpigmentation, requiring gentler lasers.
- Older skin may heal slower, affecting long-term collagen production.
- Post-Treatment Care
- Sun exposure can reverse results, making sunscreen crucial.
- Skincare (retinoids, peptides, hydration) helps sustain collagen.
- Future Acne Breakouts
New acne can cause new scars, so ongoing acne management is essential.
How Long Do Results Last?
- Ablative lasers (CO₂, Erbium): 5+ years with proper care.
- Non-ablative lasers (Fraxel, Nd:YAG): 1-3 years, may need touch-ups.
- Combination treatments (laser + microneedling/fillers): Longer-lasting effects.
5.How to Maximize Long-Term Results
Combine Treatments for Better Outcomes
- Subcision – Releases tethered scars.
- Fillers (Hyaluronic acid, Sculptra) – Plumps deep scars.
- Chemical Peels – Enhances surface texture.
- Strict Sun Protection
- SPF 50+ daily prevents UV damage from reversing progress.
- Maintain a Good Skincare Routine
- Retinoids (boost collagen).
- Vitamin C (brightens and repairs).
- Hydration & Barrier Repair (keeps skin resilient).
- Periodic Maintenance Sessions
- Yearly touch-ups may be needed for sustained results.
Limitations of Laser Treatment
- Not 100% scar removal – Some scars improve but don’t vanish.
- Cost & Downtime – Multiple sessions can be expensive.
- Risk of Side Effects – Hyperpigmentation, prolonged redness, or scarring if done incorrectly.
Alternative Treatments for Acne Scars
If lasers aren’t suitable, consider:
- Microneedling (with or without PRP)
- TCA Cross (for icepick scars)
- Dermabrasion (for severe scarring)
Final Verdict: Are Laser Treatments Permanent?
Laser treatments can significantly and long-lastingly improve acne scars, but they are not always 100% permanent. The best outcomes come from:
✔ Choosing the right laser for your scar type
✔ Combining treatments for deeper scars
✔ Following strict aftercare and sun protection
✔ Getting maintenance sessions if needed
For optimal results, consult a dermatologist to create a personalized plan.
At Medix Clinic, we offer a comprehensive range of skin and cosmetic treatments tailored to your needs. Our services include acne scarring in Melbourne, scar treatment in Melbourne, and radio frequency microneedling in Melbourne to promote skin repair and regeneration. We also provide professional skin needling in Melbourne, advanced skin tightening in Melbourne, and effective skin tag and mole removal in Melbourne. For pigmentation issues, we offer targeted pigmentation removal in Melbourne, and to restore your skin’s glow, we specialise in skin rejuvenation in Melbourne. Additionally, you can enhance your smile with our safe and effective LED teeth whitening in Melbourne