Everything You Need to Know About Laser Treatment for Acne Scars: A Dermatologist’s Perspective

Acne may eventually fade, but the scars it leaves behind often linger — impacting not just the skin, but one’s confidence too. As a board-certified dermatologist, I often get asked whether laser treatment is worth it for acne scars. The short answer? Absolutely — for the right candidate and with the right approach.

Let’s break down everything you should know before considering laser therapy for acne scarring.

How Do Acne Scars Form?

Acne scars form when inflammation damages the skin’s deeper layers, triggering abnormal healing responses. These scars may appear as:

1. Atrophic scars (depressed): ice pick, boxcar, and rolling scars
2. Hypertrophic scars (raised): typically occur on the chest, back, or shoulders
3. Post-inflammatory hyperpigmentation (PIH): flat, discolored spots, especially on darker skin tones

Laser therapy is primarily used to resurface the skin, stimulate collagen production, and fade pigmentation, making it a top-tier option for treating moderate to severe acne scars.

Types of Laser Treatments for Acne Scars

Not all lasers are created equal. The choice of laser depends on your skin type, the type of scarring, and your treatment goals.

1. Fractional CO₂ Laser (Ablative Laser)

1. Best for: Deep boxcar or rolling scars
2. How it works: Removes thin layers of skin and stimulates collagen
3. Downtime: 5–10 days
4. Results: Dramatic improvement after 1–3 sessions

Also read: How Does Clindamycin for Acne Work?

2. Erbium YAG Laser

1. Best for: Milder acne scars and patients with lighter skin
2. How it works: More precise than CO₂, less damage to surrounding tissue
3. Downtime: 3–7 days
4. Results: Moderate to significant improvement

3. Non-Ablative Fractional Laser (e.g., Fraxel Restore)

1. Best for: All skin types, especially safer for darker skin tones
2. How it works: Heats the skin to boost collagen without removing top layers
3. Downtime: Minimal
4. Results: Gradual improvement over 3–5 sessions

4. Pulsed Dye Laser (PDL) or KTP Laser

1. Best for: Red acne scars or hypertrophic scars
2. How it works: Targets blood vessels to reduce redness
3. Downtime: None to mild
4. Results: Visible reduction in redness after 1–3 sessions

What to Expect Before, During, and After Treatment

Before Treatment:

1. Consultation: A detailed skin evaluation to determine scar type and treatment plan
2. Pre-care: Avoid retinoids, sun exposure, and exfoliation 1–2 weeks before

During Treatment:

1. Anesthetic: Topical numbing cream is applied
2. Session Length: 30–90 minutes depending on the treatment area
3. Sensation: A warm, prickling or rubber-band snap feeling

After Treatment:

1. Downtime: Varies from none to 10 days
2. Side Effects: Redness, swelling, peeling, scabbing, or post-inflammatory hyperpigmentation (temporary)
3. Aftercare: Gentle skincare, high SPF, no picking or scrubbing

How Many Sessions Are Needed?

Most patients need multiple sessions spaced 4–6 weeks apart for optimal results:

1. Mild scarring: 1–2 sessions
2. Moderate to deep scarring: 3–5 sessions
3. Maintenance: Yearly touch-ups for collagen stimulation

Are There Risks?

Laser treatments are generally safe when performed by trained dermatologists, but some risks include:

1. Temporary hyperpigmentation or hypopigmentation
2. Reactivation of cold sores (if prone)
3. Scarring (rare with proper care)
4. Not ideal for active acne or certain skin types (consultation is key)

Cost of Laser Acne Scar Treatment

The cost varies based on the laser type, provider experience, and geographic location:

1. Average per session: ₹8,000 to ₹30,000 ($100–$500)
2. Packages: Often discounted for multiple sessions

While the upfront cost may seem high, the long-term benefits in skin clarity and confidence are invaluable.

Who Should Avoid Laser Treatments?

1. Individuals with active breakouts
2. Those with keloid scarring history
3. Pregnant or breastfeeding individuals
4. Those on isotretinoin (Accutane) (must wait 6 months post-treatment)

For darker skin tones, non-ablative fractional lasers are typically safer options due to lower risk of pigmentary changes.

Also read: What to Expect When Treating Acne with Tretinoin (Retin-A): A Dermatologist’s Guide

Best Brands and Devices Trusted by Dermatologists

1. Fraxel® – Fractional laser, excellent for all skin types
2. CO2RE® by Candela – Aggressive treatment for deep scars
3. Lumenis UltraPulse® – Powerful CO₂ laser
4. Vbeam® (PDL) – Ideal for redness and discoloration
5. Clear + Brilliant® – Gentle laser for maintenance and early scarring

Final Thoughts

Laser treatment for acne scars can be a game-changing solution, especially when done under the guidance of an experienced dermatologist. While it’s not an instant fix, consistent care, multiple sessions, and realistic expectations can help you achieve smoother, clearer, and more radiant skin.

Before you book a session, consult a board-certified dermatologist to determine the best type of laser for your skin and scar type. Personalized care always delivers the best results.