Acne Scar Treatments: Complete Guide to Options and Selection

Acne scars result from abnormal collagen remodeling during healing. Treatment depends on scar type, skin type, downtime tolerance, and budget.

Scar Types

• Atrophic (depressed): Ice pick, boxcar, rolling.
• Hypertrophic/keloid: Raised, firm.
• Post-inflammatory hyperpigmentation (PIH): Dark marks, not true scars.

Treatment Modalities

Energy-Based

• Fractional CO₂/Er:YAG laser: Gold standard for atrophic scars; ablative, 5–7 days downtime.
• Non-ablative fractional (1550/1927 nm): Less downtime, more sessions.
• Radiofrequency microneedling: RF energy via needles; good for all skin types.
• Picosecond laser: For PIH, some textural improvement.

Mechanical/Chemical

• Microneedling: Collagen induction; minimal downtime.
• Chemical peels (TCA, glycolic, salicylic, Jessner's): Superficial to medium depth.
• Dermabrasion: Mechanical sanding; deep, long recovery.
• Subcision: Needle releases fibrotic tethers under rolling scars.
• TCA CROSS: High-concentration TCA to ice pick scars.

Injectables

• Dermal fillers (HA, PLLA, CaHA): Elevate depressed scars; temporary to semi-permanent.
• Corticosteroids: For hypertrophic/keloid scars.
• Polynucleotides, exosomes: Emerging regenerative options.

Topical/Skin Care

• Retinoids (tretinoin, adapalene) – long-term texture improvement.
• Vitamin C, niacinamide, azelaic acid – for PIH.
• Sunscreen – prevents darkening.

Choosing a Treatment

Consult a board-certified dermatologist. Combination approaches (e.g., subcision + filler + laser) often yield best results. Realistic expectations: improvement, not perfection.