Effaclar Duo Dual Action Acne Treatment
Dual-action acne moisturiser with benzoyl peroxide and LHA.
About this product
La Roche-Posay Effaclar Duo is a dual-action acne moisturiser that combines benzoyl peroxide with LHA (lipo-hydroxy acid, a salicylic acid derivative) to attack acne from two angles: killing acne bacteria and exfoliating dead skin cells that block pores. It also contains niacinamide to reduce post-acne marks and is oil-free, non-comedogenic, and fragrance-free.
Best for oily, combination skin looking to address acne, blackheads, post-acne marks — with a focus on acne control.
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How to Use
- 1Apply a small amount to clean skin, morning and evening.
- 2Focus on blemish-prone areas.
- 3Allow to absorb before applying moisturizer.
- 4Avoid the eye area.
- 5Follow with SPF in the morning.
Product Claims
Common Allergens
Based on confirmed product attributes. Always check the full ingredient list for personal allergens.
Always check the full ingredient list if you have known allergies or sensitivities.
Routine Placement
Apply this spot treatment as step 5 in your routine.
Quick Stats
pH Level
Slightly acidic — close to skin's natural pH (4.5–5.5). Gentle and generally well tolerated.
Dermatologist Note
Combines 5.5% benzoyl peroxide (antibacterial) with lipo-hydroxy acid (LHA, a gentle BHA derivative) for a dual-action approach to acne. Clinical trials showed significant reduction in inflammatory and non-inflammatory lesions at 12 weeks. The LHA concentration is mild enough to use daily without significant irritation for most acne-prone skin types.
Based on published clinical literature and dermatological research.
Where to Buy
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Disclaimer: Information on this page is for educational purposes only and does not constitute medical or dermatological advice. Always patch test new products and consult a qualified professional if you have skin concerns. Skinuity does not sell any products. We provide affiliate links to third-party retailers and may earn a commission on qualifying purchases.