La Roche-Posay Effaclar Duo Dual Action Acne Treatment

La Roche-Posay

La Roche-Posay Effaclar Duo Dual Action Acne Treatment

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About this product

The La Roche-Posay Effaclar Duo Dual Action Acne Treatment is a treatment. 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.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Treatments
Ingredients
13
Low-risk
12
Fragrance
Fragrance-free
Origin
France

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe Minimal Ingredients

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 2/2
Good for dry skin
Isostearyl Alcohol Glycerin
Caution for dry skin
Glycerin Silica
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Benzoyl Peroxide
Sensitive Skin 2/1
Good for sensitive skin
Glycerin Tocopheryl Acetate
Caution for sensitive skin
Glycerin

Ingredients list

13 total
Lower hazard (1) Higher hazard (3)
All13 Skin Conditioning8 Viscosity Controlling5 Solvent3 Emulsion Stabilising3 Viscosity Increasing Agent2 Humectant2 Abrasive1 Absorbent1
EWG CIR Ingredient Name & Cosmetic Functions Notes
3
Benzoyl Peroxide
(Antiacne Agent, Oxidising Agent)
1
Water
(Solvent)
1
A
Isostearyl Alcohol
(Skin Conditioning, Emollient, Viscosity Increasing Agent, Viscosity Controlling)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
B
Capryloyl Salicylic Acid
(Skin Conditioning)
3
B
Potassium Hydroxide
(Ph Adjuster, Buffering Agent)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
Epilobium Angustifolium Flower/Leaf/Stem Extract
(Skin Conditioning)

My Ingredient Notes

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Key ingredients

Isostearyl Alcohol
Skin Conditioning, Emollient
Glycerin
Humectant, Skin Protecting
Pentylene Glycol
Skin Conditioning
Capryloyl Salicylic Acid
Skin Conditioning
Tocopheryl Acetate
Antioxidant, Skin Conditioning
Epilobium Angustifolium Flower/Leaf/Stem Extract
Skin Conditioning

Benefits

Good for oily/acne-prone skin
Good for sensitive skin

Concerns

Not fungal acne (malassezia) safe

Ingredients explained

Benzoyl Peroxide
Antiacne agent, Oxidising agent
Low-to-moderate hazard.Read moreShow less
EWG 3 Antiacne agentOxidising agent
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Isostearyl Alcohol
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningEmollientViscosity increasing agentViscosity controlling
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Silica
Abrasive, Absorbent
Low-hazard ingredient.Read moreShow less
EWG 1–2 CIR A AbrasiveAbsorbentAnticaking agentBulking agentOpacifyingViscosity controlling
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Capryloyl Salicylic Acid
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioning
Potassium Hydroxide
Ph adjuster, Buffering agent
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Ph adjusterBuffering agent
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion stabilising, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Emulsion stabilisingFilm formingViscosity controlling
Disodium EDTA
Chelating agent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentViscosity controlling
Epilobium Angustifolium Flower/Leaf/Stem Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Use with caution
BHA (salicylic) (Capryloyl Salicylic Acid)

Low-strength topical salicylic acid (BHA) is generally considered fine. Caution is usually reserved for high-strength leave-on products and salicylic peels.

Ask your doctor
Benzoyl Peroxide (Benzoyl Peroxide)

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.

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

BHA (salicylic) 0.5–2%

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

Benzoyl Peroxide 2.5–10% (OTC)

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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