La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum

La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum
3.8
/ 10
Moisturizing
7.6 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
3.9Anti-wrinkle icon/ 10
Anti-wrinkle

Review

Does La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum work?

Based on the ingredient list analysis by CreamScan AI, these are the key benefits you can expect from using La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum:

  • Light moisturizing. It has a moisturizing rating of 3.8 out of 10.
  • Some anti-wrinkle efficacy: La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum has an anti-wrinkle rating of 3.9 out of 10 so you may expect some, although limited, effect on wrinkles.

Lightweight moisturizer well-suited for oily skin and a humectant enhancement for any skincare routine

According to CreamScan analysis, La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum is lightly moisturizing, with a moisturizing rating of 3.8 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 high humectancy of 7.6 out of 10, primarily due to the high content of Propanediol (est. ≈4.0%) and Niacinamide (est. ≈2.0%).

This humectant-rich product, when used alone as a moisturizer, is well-suited for oily skin, providing moderate hydration in a lightweight, fast-absorbing formula without any occlusive ingredients.

Tip: 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.

But it’s not limited to oily skin - such a humectant enhancement will also positively contribute to the moisturizing efficacy of any skincare routine when used as a step before applying the main moisturizer. This type of formulation is typically used in serums, where a light, fast-absorbing texture is key.

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

Some anti-wrinkle efficacy

According to CreamScan analysis, La Roche-Posay Effaclar Salicylic Acid Acne Treatment Serum has a slight anti-wrinkle rating of 3.9 out of 10.

It contains 2 active ingredients with proven anti-wrinkle efficacy:

  • Niacinamide (est. ≈2.0%),
     one of the most effective and well-researched anti-wrinkle ingredients. A clinical study involving 30 participants (Kawada et al.) confirmed that a cream with 4% niacinamide reduced the average depth of wrinkles around the eyes by 9% after 8 weeks of use, compared to a vehicle (the same formulation without niacinamide).
  • Glycolic Acid (est. ≈3.0%),
     a highly effective ingredient in peelings but with moderate anti-wrinkle efficacy in leave-on skincare products, as supported by a single clinical study. This study, involving 72 participants (Thibault et al.), demonstrated that a lotion with 5% GA reduced the fine wrinkling score by 6% after 34 days of use, compared to a vehicle (the same formulation without GA).
Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, can deliver some anti-wrinkle effects through its moisturizing action.
 

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Ingredients

Est. % Ingredient Origin Functions
80
6
4
3
2
1.5
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Est. %
Water
Function:
Origin:
Alcohol Denat.
Function:
Origin:
Propanediol
Function:
Origin:
Glycolic Acid
Function:
Origin:
Niacinamide
Function:
Origin:
Dimethyl Isosorbide
Function:
Origin:
Pentylene Glycol
Function:
Origin:
Sodium Hydroxide
Function:
Origin:
PPG-26-Buteth-26
Function:
Origin:
Hydroxyethylpiperazine Ethane Sulfonic Acid
Function:
Origin:
Citric Acid
Function:
Origin:
PEG-30 Glyceryl Cocoate
Function:
Origin:
PEG-40 Hydrogenated Castor Oil
Function:
Origin:
PEG-60 Hydrogenated Castor Oil
Function:
Origin:
Capryloyl Salicylic Acid
Function:
Origin:
Biosaccharide Gum-1
Function:
Origin:
Maltodextrin
Function:
Origin:
Phytic Acid
Function:
Origin:
Polyquaternium-10
Function:
Origin:
Fragrance
Function:
Origin:

Ratings

All humectants
7.6
4
2
1.3
0.3
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
3.8
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 7.6 10
7.6
4
2
1.3
0.3
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
3.8
Ingredient Est. % Benchmark Humectancy
4
2
1.3
0.3
All humectants 7.6 10
7.6
All humectants
7.6
4
2
1.3
0.3
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
6 /10 4 2 3
1.5 /10 5 3 0.9
Total
3.9
Niacinamide
3
Ingredient anti-wrinkle power
6 /10
when present at, %
4
in this formula, est. %
2
Glycolic Acid
0.9
Ingredient anti-wrinkle power
1.5 /10
when present at, %
5
in this formula, est. %
3
Anti-wrinkle rating
3.9
Ingredient Est. % Benchmark
Rich in Antioxidants
2
All antioxidants 2 3 No
All antioxidants
2
Niacinamide
2
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
2
0.3
0.3
All soothing 2.6 5 No
All soothing
2.6
2
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.
Alcohol Denat.
Est. %6
Function
Origin
Alcohol Denat.

Denatured alcohol is ethanol that contains additives that make it unsafe to consume. It is mainly used as a solvent and an antimicrobial agent. A major drawback to alcohol denat. is that it dries out the skin.

Propanediol
Est. %4
Function
Origin
PropanediolAn excellent solvent capable of mixing water with normally water-insoluble ingredients. It also functions as a humectant due to its water-loving alcohol groups. Propanediol can control the viscosity of a product by reducing its thickness.
Glycolic Acid
Est. %3
Function
Origin
Glycolic Acid

The second most used AHA (after lactic acid) known for its potent exfoliating and smoothing effects. It increases skin cell turnover, which is beneficial for treating acne. When used in peels, glycolic acid has confirmed anti-wrinkle efficacy, though it is less effective in leave-on products like creams and serums.

Niacinamide
Est. %2
Function
Origin
Niacinamide

Also known as vitamin B3, this ingredient is a true superstar with confirmed moisturizing, anti-acne, hyperpigmentation, and antioxidant benefits. Two studies confirm its significant anti-wrinkle efficacy.

Dimethyl Isosorbide
Est. %1.5
Function
Origin
Dimethyl IsosorbideA solvent for active ingredients that is claimed to help them better penetrate the outer layer of skin. It also helps to reduce the thickness of a product.
Pentylene Glycol
Est. %1.3
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.

Sodium Hydroxide
Est. %1
Function
Origin
Sodium Hydroxide

An ingredient that is able to bring the pH of a product up, thereby making it less harsh on the skin.

PPG-26-Buteth-26
Est. %0.3
Function
Origin
PPG-26-Buteth-26A water-loving surfactant, which means it can act as an emulsifier, solubilizer, and cleansing agent. As an emulsifier, it helps to create oil-in-water emulsions.
Hydroxyethylpiperazine Ethane Sulfonic Acid
Est. %0.3
Function
Origin
Hydroxyethylpiperazine Ethane Sulfonic AcidA pH buffer that secures the pH around 7.5.
Citric Acid
Est. %0.3
Function
Origin
Citric AcidA gently exfoliating AHA that helps to remove the top layer of dead skin cells. In comparison to other AHAs, citric acid has been shown to be one of the least effective. It is also very commonly used as a stabilizing and pH-controlling agent.
PEG-30 Glyceryl Cocoate
Est. %0.3
Function
Origin
PEG-30 Glyceryl Cocoate
PEG-40 Hydrogenated Castor Oil
Est. %0.3
Function
Origin
PEG-40 Hydrogenated Castor OilA castor oil-derived ingredient often used to incorporate small amounts of oil (such as a fragrance) into a water-based product. PEG-4 HCO is a gold-standard solubilizer and can be used in low amounts due to its ability to solubilize things so well.
PEG-60 Hydrogenated Castor Oil
Est. %0.3
Function
Origin
PEG-60 Hydrogenated Castor OilA white paste-like substance derived from castor oil that belongs to a group of ingredients called PEGs (polyethylene glycols). It acts as a perfume solubilizer that helps fragrance agents dissolve in water and as a cleansing agent.
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.
Biosaccharide Gum-1
Est. %0.3
Function
Origin
Biosaccharide Gum-1A polysaccharide with humectant moisturizing and soothing properties.
Maltodextrin
Est. %0.3
Function
Origin
MaltodextrinA formula helper manufactured from starch. It has a sweet flavor and is often used in rinse-off products to support their foaming structure. Maltodextrin is also used to stabilize emulsions and to absorb and bind other ingredients in the formula.
Phytic Acid
Est. %0.3
Function
Origin
Phytic AcidPhytic acid is found in rice and is seen as a cousin of alpha-hydroxy acids. As a chelator, it can bind to certain metals that may cause discoloration in products or reduce the efficacy of other ingredients.
Polyquaternium-10
Est. %0.3
Function
Origin
Polyquaternium-10A cellulose-based film former.
Fragrance
Est. %0.3
Function
Origin
FragranceUnder trade secret law, manufacturers have the right not to disclose what exactly went into the fragrance and use the unspecific word Fragrance or Parfum instead. Many fragrances are highly allergenic.