La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment Review

La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment
2.5
/ 10
Moisturizing
5.0 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
Review

Does La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment has to offer:
 
✅ Light moisturizing. It has a moisturizing rating of 2.5 out of 10.

  

Key Benefits of La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment

 
These are the key benefits you can expect from using La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment:
 

🔵 Lightweight Purely Humectant Moisturizer Suitable for Oily Skin

According to CreamScan analysis, La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment is lightly moisturizing, with a moisturizing rating of 2.5 out of 10.

Is it more humectant or occlusive? Purely humectant. It has zero occlusivity (we didn't find any occlusive ingredients on the ingredient list) and a moderate humectancy of 5.0 out of 10, due to the high content of Glycerin (est. ≈3.0%) and Pentylene Glycol (est. ≈2.0%).

This product, when used alone as a moisturizer, can provide light humectant hydration in a fast-absorbing formula without any occlusive ingredients. This could work for people with oily skin who need a basic level of hydration.

📌 Certain studies suggest that humectants alone may not effectively moisturize the skin. If you use this product as your only moisturizer, we recommend following it with one that contains at least some occlusive ingredients.

💧 A Humectant Add-on for Any Skincare Routine

But it’s not limited to oily skin - since it contains a moderate amount of humectants, such a humectant add-on will also positively contribute to the moisturizing efficacy of any skincare routine when used as a step before applying the main moisturizer.

Please refer to the Ratings section below for details of the moisturizing rating calculation.

📌 Please note that this is not a complete list of benefits. We are in the process of enhancing our AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Things to Be Aware Of: La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment

 
CreamScan AI identified a few things to consider before adding La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment to your skincare routine:
 

⚠️ If It’s Your Only Moisturizer, It Needs to Be Paired with Some Occlusives

While humectants are highly effective at attracting water to the skin, studies (J. N. Kraft, C. W. Lynde) suggest they may not be efficient when used alone.

One major drawback of purely humectant moisturization is that the water attracted by humectants to the upper layers of the skin can evaporate completely into the environment through transepidermal water loss (TEWL). Adding occlusive ingredients helps seal this moisture into the skin and prevent further water loss.

If you’re using La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment as your only moisturizer, consider pairing it with one that contains at least some occlusive ingredients, such as oils, butters, or silicones. These work alongside humectants to create a protective barrier, locking in hydration and ensuring longer-lasting moisturization. The amount of occlusive needed depends on your skin type - the drier the skin, the more occlusives it requires.

If this product is used not as a standalone moisturizer but as part of your skincare routine, such as a toner or serum, it should be applied before your main moisturizer (unless it's a sunscreen), which will provide the necessary occlusivity on top of it.

Pros & Cons of La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment

 
Here’s an overview of the pros and cons of La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ When used alone: Provides moderate humectant moisturizing suitable for oily skin
✅ As part of a routine: A humectant moisturizing enhancement, beneficial for any skin type
✅ Lightweight texture
 

⭕ Cons: 

⚠️ Only if used as a standalone moisturizer - it needs to be paired with occlusives to seal in humectants
   

Summary: La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment

 
Based on the ingredient list analysis, CreamScan AI suggests that La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment
, when used alone, provides lightweight, moderate humectant moisturizing, making it suitable for oily skin. As part of a moisturizing routine, it offers a subtle humectant enhancement, beneficial for all skin types.
 
That said, there are some things about La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment worth noting.
 
Looking at its moisturizing profile, we found that it doesn’t contain any occlusive ingredients, potentially allowing the moisture attracted to the skin by humectants to evaporate. Therefore, if it’s used as the only moisturizer in a routine, it’s recommended to pair it with one that contains at least some occlusive ingredients, such as oils, butters, or silicones.
 
📌 Fact check. At CreamScan, we are committed to accuracy and fairness. If you spot any errors or something that doesn’t seem right, please click here to let us know. We regularly update the ingredient lists and monitor the latest research on ingredient efficacy to ensure that our information remains as complete and precise as possible. The information provided here is for informational purposes only and does not substitute professional advice. We do not guarantee the efficacy or safety of any product, as individual results may vary.

 

Ingredients

Est. % Ingredient Origin Functions
80
5.5
4
3
2
1.5
1.3
0.3
0.3
0.3
0.3
0.3
0.3
Est. %
Water
Function:
Origin:
Benzoyl Peroxide
Function:
Origin:
Isostearyl Alcohol
Function:
Origin:
Glycerin
Function:
Origin:
Pentylene Glycol
Function:
Origin:
Silica
Function:
Origin:
Carbomer
Function:
Origin:
Capryloyl Salicylic Acid
Function:
Origin:
Potassium Hydroxide
Function:
Origin:
Tocopheryl Acetate
Function:
Origin:
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Function:
Origin:
Disodium EDTA
Function:
Origin:
Epilobium Angustifolium Flower/Leaf/Stem Extract
Function:
Origin:

Ratings

All humectants
5.0
3
2
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
2.5
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 5 10
5.0
3
2
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
2.5
Ingredient Est. % Benchmark Humectancy
3
2
All humectants 5 10
5
All humectants
5.0
3
2
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
None
All occlusives 0.0 20
0.0
All occlusives
0.0
None
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
None
Total
0
None
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
0.3
0.3
All antioxidants 0.6 3 No
All antioxidants
0.6
Tocopheryl Acetate
0.3
Epilobium Angustifolium Flower/Leaf/Stem Extract
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
0.3
All soothing 0.3 5 No
All soothing
0.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %80
Function
Origin
WaterThe most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Benzoyl Peroxide
Est. %5.5
Function
Origin
Benzoyl Peroxide
Isostearyl Alcohol
Est. %4
Function
Origin
Isostearyl Alcohol
Glycerin
Est. %3
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Pentylene Glycol
Est. %2
Function
Origin
Pentylene Glycol

A naturally or synthetically derived preservative that exhibits effective antifungal and antibacterial traits. It also acts as a booster for more traditional preservatives. Pentylene glycol can also serve as a moisturizing humectant and solvent.

Silica
Est. %1.5
Function
Origin
SilicaA widely used cosmetic ingredient with the same chemical composition as the sand found on beaches. A common function of silica is its ability to control viscosity. In certain chemical forms, it can effectively thicken cream-style products.
Carbomer
Est. %1.3
Function
Origin
CarbomerA synthetic ingredient with the ability to gel water. When used in emulsions, such as lotions and creams, carbomer can also act as an emulsion stabilizer.
Capryloyl Salicylic Acid
Est. %0.3
Function
Origin
Capryloyl Salicylic AcidA derivative of salicylic acid, with bigger and more lipid-soluble molecules. This makes it more powerful and safer than salicylic acid. It is used as an exfoliating and peeling agent.
Potassium Hydroxide
Est. %0.3
Function
Origin
Potassium HydroxideA very alkaline ingredient, meaning that it has a high pH. Potassium hydroxide is therefore useful in bringing a low pH in a cosmetic product up to a more neutral, skin-safe level.
Tocopheryl Acetate
Est. %0.3
Function
Origin
Tocopheryl Acetate

An antioxidant derivative of tocopherol (vitamin E). It helps to protect cells from free radicals and UV damage through the conversion to active vitamin E in the skin. It is more stable than tocopherol.

Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Est. %0.3
Function
Origin
Acrylates/C10-30 Alkyl Acrylate CrosspolymerA synthetic ingredient that is used to thicken water and alcohol. It results in a more lightweight formula and is commonly found in gel products.
Disodium EDTA
Est. %0.3
Function
Origin
Disodium EDTAA synthetic chelator that helps to maintain the look and smell of a product by 'locking up' troublesome metal ions.
Epilobium Angustifolium Flower/Leaf/Stem Extract
Est. %0.3
Function
Origin
Epilobium Angustifolium Flower/Leaf/Stem ExtractAn extract from a plant known in North America as Fireweed and in Europe as Willowherb. It is commonly used in traditional herbal medicine. Due to its abundant content of tannins and flavonoids, it has great astringent and antioxidant properties.