Chemical Peels for Acne Scars: Types, Process & Results

Acne scars are a common aftermath of inflammatory acne. While many treatments are available, chemical peels remain one of the most effective, accessible, and versatile options for improving acne scars and overall skin texture.

How Do Chemical Peels Work?

A chemical peel involves applying a controlled acid solution to the skin. This solution causes the outer damaged layers to exfoliate and eventually peel off, revealing smoother, less scarred skin underneath. The process also stimulates collagen production, which helps fill in depressed scars over time.

Types of Chemical Peels

Superficial (Light) Peels

These penetrate only the outermost layer of skin (epidermis). They're gentle with minimal downtime.

• Glycolic Acid (20–50%): An AHA derived from sugarcane. Excellent for mild acne scars, uneven tone, and texture. Stimulates collagen with repeated sessions
• Salicylic Acid (20–30%): A BHA that's oil-soluble, making it ideal for oily, acne-prone skin. Penetrates pores to reduce active acne while fading post-inflammatory marks
• Mandelic Acid: A gentler AHA suitable for darker skin tones with lower risk of post-inflammatory hyperpigmentation

Medium Peels

Penetrate through the epidermis into the upper dermis for more significant improvement.

• TCA (Trichloroacetic Acid) 15–35%: More powerful; effective for moderate acne scars, deeper pigmentation, and fine lines. Requires more recovery time (5–7 days of peeling)
• Jessner's Peel: A combination of salicylic acid, lactic acid, and resorcinol. Often used before TCA to enhance penetration

Deep Peels

• TCA 50%+ or Phenol Peels: Reserved for severe scarring. Significant downtime and risk; performed under medical supervision only. Rarely recommended for acne scars in darker skin tones due to pigmentation risks

Which Type of Acne Scars Do Peels Treat?

Scar Type	Best Peel	Effectiveness
Post-inflammatory hyperpigmentation (dark marks)	Glycolic / Mandelic	Excellent
Shallow boxcar scars	TCA / Glycolic series	Good
Rolling scars	TCA Cross / Medium peels	Moderate to Good
Ice-pick scars	TCA Cross (focal application)	Moderate
Active acne + marks	Salicylic acid	Excellent

The Chemical Peel Process

1. Pre-peel preparation (1–2 weeks): Skin may be prepped with at-home products (retinoids, AHAs) to enhance results and ensure even penetration
2. Cleansing: Skin is thoroughly cleansed and degreased
3. Application: The peel solution is applied evenly with a brush or gauze. You may feel tingling, warmth, or mild stinging
4. Neutralisation: Some peels are neutralised with a solution; others are self-neutralising
5. Post-peel care: Soothing cream and sunscreen are applied; detailed aftercare instructions provided

Recovery and Aftercare

• Light peels: Mild redness for a few hours; slight flaking for 2–3 days
• Medium peels: Redness and visible peeling for 5–7 days; skin looks pink before revealing improved texture
• Strict sun avoidance and SPF 50+ for 2–4 weeks minimum
• No picking or pulling at peeling skin
• Use gentle, hydrating products; avoid actives until skin has fully healed

How Many Sessions Are Needed?

Light peels: 4–8 sessions, spaced 2–3 weeks apart. Medium peels: 2–4 sessions, spaced 4–6 weeks apart. Your dermatologist will create a treatment plan based on scar severity and skin type.