🧪 Treatment
La Roche-Posay Effaclar Duo Acne Treatment
80
La Roche-PosayB
🧴Acne-Friendly🧪Active-Rich
🩺Dermatologist-Tested👃Fragrance-Free💚Allergen-Free✅Paraben-Free🧪Alcohol-Free
La Roche-Posay La Roche-Posay Effaclar Duo Acne Treatment is a treatment with 3 active ingredients. Key actives: Niacinamide, Benzoyl Peroxide, Zinc PCA, Piroctone Olamine. Fragrance-free.
Warnings
- •3 potential irritants in the formula — introduce gradually.
Ingredient Breakdown (8 INCI · 4 active)
- 0Aqua/Water
- 1Glycerin
- 2Dimethicone
- 3NiacinamideACTIVE
- 4Benzoyl PeroxideACTIVE
- 5Isononyl Isononanoate
- 9Zinc PCAACTIVE
- 10Piroctone OlamineACTIVE
Product Info
Type
Treatment
Price
$31.99
Certifications
🩺 Dermatologist-Tested👃 Fragrance-Free💚 Allergen-Free✅ Paraben-Free🧪 Alcohol-Free
Score Breakdown
Efficacy
80
🧪Ingredient Quality37.5 / 45
- ✓3 high-impact actives: Niacinamide, Benzoyl Peroxide, Zinc PCA
- ✓1 supporting active (Tier 2)
🎯Concentration Signal15 / 15
- ✓1 active concentration disclosed on the label
- ↑Disclose the % for the remaining 3 actives
🏆Evidence Backing13 / 15
- ✓Average evidence 87/100 across 11 matched actives
- ✓9 actives with strong evidence (≥80/100)
🧬Formulation Sophistication10 / 12
- ✓8 distinct ingredient classes — well-rounded formula
- ✓Synergy: Niacinamide + Zinc
📋Functional Completeness4 / 8
- ✓Some category-appropriate actives present
- ↑Add the missing functional class for this product type
🛡️Base Formula Credit0 / 5
Safety
95
Starts at 100; each row below subtracts points up to its cap.
🔥Irritation Risk−7 / 18
- ⚠High-irritation: Benzoyl Peroxide
🌿Fragrance0 / 10
- ✓Fragrance-free
⚠️Allergens0 / 10
- ✓No EU 26 fragrance allergens detected
🚫Endocrine Concern0 / 15
- ✓No ingredients flagged for endocrine activity
💎Comedogenicity−2.3 / 7
- ⚠Moderate comedogenic potential (avg 1.7/5)
🔀Formulation Conflicts0 / 10
- ✓No antagonistic ingredient combinations
✨Clean-Formula & Transparency+4 / 8
- ✓Short-ingredient-list bonus: +2.0
- ✓Transparency bonus: +2.0 (clear INCI disclosure)
Overall Score80/100
Overall = 50% Efficacy + 50% Safety. No bonus pad — hitting 100 requires both dimensions to be near-perfect. How scoring works →