La Roche-Posay Effaclar Ultra Concentrated Serum Review

La Roche-Posay Effaclar Ultra Concentrated 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 Ultra Concentrated Serum Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what La Roche-Posay Effaclar Ultra Concentrated Serum has to offer:
 
✅ Light moisturizing. It has a moisturizing rating of 3.8 out of 10.
✅ Modest anti-wrinkle efficacy: La Roche-Posay Effaclar Ultra Concentrated Serum has an anti-wrinkle rating of 3.9 out of 10 so you may expect some, although limited, effect on wrinkles.

  

Key Benefits of La Roche-Posay Effaclar Ultra Concentrated Serum

 
These are the key benefits you can expect from using La Roche-Posay Effaclar Ultra Concentrated Serum:
 

🔵 Lightweight Purely Humectant Moisturizer Well-Suited for Oily Skin

According to CreamScan analysis, La Roche-Posay Effaclar Ultra Concentrated 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.

📌 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 Enhancement for Any Skincare Routine

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.

🟣 Modest Anti-Wrinkle Efficacy

According to CreamScan analysis, La Roche-Posay Effaclar Ultra Concentrated Serum has a modest level of anti-wrinkle efficacy, rated 3.9 out of 10.

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

1️⃣ 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).
 
2️⃣ 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 additional anti-wrinkle effects through its moisturizing action.
 

Please refer to the Ratings section below for details of the anti-wrinkle 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 Ultra Concentrated Serum

 
CreamScan AI identified a few things to consider before adding La Roche-Posay Effaclar Ultra Concentrated Serum to your skincare routine:
 

⚠️ May Increase Skin Photosensitivity Due to Glycolic Acid

This product contains glycolic acid, a popular AHA known for its ability to exfoliate and brighten the skin. Its action works by removing dead skin cells, revealing new, more delicate skin that is particularly vulnerable to sun damage.

As a result, using products with glycolic acid, regardless of concentration, may increase the skin's sensitivity, making it more prone to sunburn or irritation when exposed to UV rays.

To counteract this increased sun sensitivity, apply a broad-spectrum sunscreen with at least SPF 30 daily to protect your skin during glycolic acid treatment.

📌 Please always check the manufacturer's instructions for using the product, either on their website or product label.

⚠️ 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 Ultra Concentrated Serum 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 Ultra Concentrated Serum

 
Here’s an overview of the pros and cons of La Roche-Posay Effaclar Ultra Concentrated Serum to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ When used alone: Provides humectant-rich moisturizing well-suited for oily skin
✅ As part of a routine: A humectant moisturizing enhancement, beneficial for any skin type
✅ Lightweight texture
Offers modest anti-wrinkle efficacy
 

⭕ Cons: 

⚠️ May increase skin photosensitivity due to glycolic acid
⚠️ Only if used as a standalone moisturizer - it needs to be paired with occlusives to seal in humectants
   

Summary: La Roche-Posay Effaclar Ultra Concentrated Serum

 
Based on the ingredient list analysis, CreamScan AI suggests that La Roche-Posay Effaclar Ultra Concentrated Serum
, when used alone, delivers lightweight, humectant-rich moisturizing that is well-suited for oily skin. As part of a moisturizing routine, it provides a humectant enhancement, beneficial for all skin types.
 
La Roche-Posay Effaclar Ultra Concentrated Serum contains ingredients with proven evidence of anti-wrinkle efficacy that may provide a modest anti-wrinkle effect. As a result, you can expect a positive, though not very significant, impact on wrinkles.
 
That said, there are some things about La Roche-Posay Effaclar Ultra Concentrated Serum 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.
 
This product contains glycolic acid, a popular AHA known for its ability to exfoliate and brighten the skin. However, glycolic acid - regardless of concentration - can increase skin sensitivity, making it more prone to sunburn or irritation when exposed to UV rays. Therefore, it’s recommended to use a broad-spectrum sunscreen with at least SPF 30 during glycolic acid treatment.
 
📌 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
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
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:
Salicylic Acid
Function:
Origin:
Sodium Hydroxide
Function:
Origin:
PEG-60 Hydrogenated Castor Oil
Function:
Origin:
Hydroxyethylpiperazine Ethane Sulfonic Acid
Function:
Origin:
Citric Acid
Function:
Origin:
PEG-30 Glyceryl Cocoate
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
1
0.3
0.3
All soothing 3.6 5 No
All soothing
3.6
2
1
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.

Salicylic Acid
Est. %1
Function
Origin
Salicylic AcidThis effective peeling and anti-inflammatory BHA is used as an anti-acne agent and works by breaking down the junctions between dead skin cells. This results in the peeling of dead skin and the unclogging of pores.
Sodium Hydroxide
Est. %0.3
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.

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.
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
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.