Aesthetic Treatments for Acne Scarring — A Decision Framework

Last updated: 5 March 2026

Acne scarring affects an estimated 95 percent of people with acne to some degree, yet selecting the right treatment approach remains challenging. This decision framework guides patients and practitioners through evidence-based treatment selection based on scar type, severity, and patient factors.

Reviewed by the Axiom Aesthetics Clinical Team | Last updated: February 2026

Understanding Acne Scar Types

Atrophic Scars

The most common acne scars result from tissue loss during the healing process. Ice pick scars are narrow (less than 2mm), deep, V-shaped depressions extending into the dermis or subcutis. Boxcar scars are wider (1-4mm) with sharply defined vertical edges, appearing as round or oval depressions with flat bases. Rolling scars are broad (4-5mm or wider) with gently sloping edges creating an undulating surface appearance. Each type requires different treatment approaches for optimal outcomes.

Hypertrophic and Keloidal Scars

Less common in acne, these result from excess collagen production during healing. Hypertrophic scars remain within the boundaries of the original wound, while keloids extend beyond. They are more common on the chest, back, and jawline, and in darker skin types.

The Treatment Decision Framework

Step 1: Classify the Scars

A thorough scar assessment under good lighting, including tangential illumination, is essential. Most patients have mixed scar types requiring a combination approach. The Goodman and Baron qualitative scar grading system (grades 1-4) helps standardise severity assessment.

Step 2: Address Active Acne First

Treating scars while acne is active is counterproductive, as new lesions create new scars while treatment is ongoing. Acne must be well-controlled for at least 3-6 months before scar revision begins. This may require medical therapy including isotretinoin in severe cases.

Step 3: Match Treatment to Scar Type

Ice pick scars respond best to TCA CROSS (chemical reconstruction of skin scars, applying 70-100 percent TCA directly into the scar), punch excision (surgically removing the scar and closing with a suture), or RF microneedling for wider ice pick scars. Boxcar scars respond to fractional CO2 or Erbium laser, subcision (breaking the fibrotic tethering beneath the scar), filler injection to raise depressed scars, and microneedling with PRP. Rolling scars respond best to subcision (essential first step), followed by filler or collagen stimulation, microneedling, and fractional laser for surface refinement.

Combination Approaches

The most effective acne scar treatment protocols combine multiple modalities addressing different scar components. A typical comprehensive protocol might include subcision to release tethered scars, followed by filler to lift depressed areas, then fractional laser for surface refinement, and PRP for healing and collagen stimulation. This multimodal approach consistently outperforms any single treatment in clinical studies.

Expected Outcomes and Timelines

Patients should expect 40-70 percent improvement over 6-12 months with comprehensive treatment. Multiple sessions are required for each modality. Complete scar elimination is rarely achievable, but significant improvement in appearance and texture is realistic. Improvement continues for 6-12 months after the final treatment as collagen remodelling progresses.

Skin Type Considerations

Darker skin types (Fitzpatrick IV-VI) carry higher risks of post-inflammatory hyperpigmentation with aggressive treatments. Microneedling and subcision are generally safest across all skin types. Fractional laser requires conservative settings with pre and post treatment melanocyte modulation. Chemical peels should be approached cautiously with appropriate agent selection. Thorough pre-treatment preparation including sun avoidance and melanocyte modulating agents is essential.

Frequently Asked Questions