La Roche-Posay Effaclar Duo
The La Roche-Posay Effaclar Duo is a misc. Our analysis of its 13 ingredients (12 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone, dry, and sensitive skin.
The La Roche-Posay Effaclar Duo is a misc. Our analysis of its 13 ingredients (12 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone, dry, and sensitive skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Benzoyl Peroxide
(Antiacne Agent, Oxidising Agent) |
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Water
(Solvent) |
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Isostearyl Alcohol
(Skin Conditioning, Emollient, Viscosity Increasing Agent, Viscosity Controlling) |
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Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
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Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
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Capryloyl Salicylic Acid
(Skin Conditioning) |
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Potassium Hydroxide
(Ph Adjuster, Buffering Agent) |
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Tocopheryl Acetate
(Antioxidant, Skin Conditioning) |
Bad for Oily Skin
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Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling) |
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Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
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Epilobium Angustifolium Flower/Leaf/Stem Extract
(Skin Conditioning) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
Contains ingredients some choose to avoid or double-check while pregnant or nursing.
Low-strength topical salicylic acid (BHA) is generally considered fine. Caution is usually reserved for high-strength leave-on products and salicylic peels.
Often considered acceptable for limited spot use, but many clinicians prefer you check first.
This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.
The concentrations these actives are typically effective at in research — not a measurement of this product.
Salicylic acid is OTC-capped at 2%; 0.5–2% is the usual leave-on range. Much below that it acts more as a soothing agent than an exfoliant.
Capryloyl Salicylic Acid
Lower strengths (2.5–5%) work about as well as 10% for many people, with less dryness and irritation.
Benzoyl Peroxide
INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.
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