La Roche-Posay Effaclar Serum for Blemish-Prone Skin

La Roche-Posay Effaclar Serum for Blemish-Prone Skin

Efficacy100/100IrritancyMedium·100% recommend (1 review)

Works for

Moisturizing
Niacinamide, Biosaccharide gum-1 + 1 more
Works well
What the product description says
“Gentle but still super-clarifying, let this treatment serum keep your barrier in check and moisture levels replenished.”
Source: Cultbeauty

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": biosaccharide gum-1.

When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: niacinamide

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3.1%
Biosaccharide gum-1Key active· HumectantEffect: HighHelps attract water to the upper layer of the skin and is claimed to provide a longer-lasting hydration because of its ability to create a water-binding film on the surface of the skin~0.15–0.5%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~1.4–2.1%
Evens skin tone
Glycolic acid, Niacinamide + 2 more
Works well
What the product description says
“The formula is enriched with the brand’s thermal spring water and niacinamide, providing soothing and brightening benefits, alongside promoting a mattified finish to reduce the look of excess shine.”
Source: Lookfantastic

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: glycolic acid, niacinamide, salicylic acid

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually can help even out the skin tone: capryloyl salicylic acid.

Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

Glycolic acidKey activeEffect: HighAn alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid~2.8–4.2%
NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3.1%
Capryloyl salicylic acidKey activeEffect: Medium~0.2–0.7%
Salicylic acidEffect: LowUsed for skin exfoliation. It has an anti-inflammatory and anti-bacterial effect, helps to unclog pores, prevent blemishes and speed up healing of the existing ones. Sometimes referred to as a BHA (beta-hydroxy acid)~0.55–1.35%
Exfoliation
Glycolic acid, Salicylic acid + 2 more
Works well
What the product description says
“La Roche-Posay’s best-selling Effaclar Ultra Concentrate Serum is a gentle yet effective formula that visibly clarifies the complexion, while micro-exfoliating the skin to decongest the pores and buff away dead surface cells.”
Source: Lookfantastic

This product can help exfoliate the skin. In other words, it helps break down the bonds between dead cells on the surface of the skin and speed up the skin turnover. Skin often appears softer and brighter after exfoliation, but overdoing it can result in disrupted skin barrier. The following ingredient is doing the exfoliating job in this product: capryloyl salicylic acid, glycolic acid, salicylic acid.

Glycolic acidKey activeEffect: HighAn alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid~2.8–4.2%
Salicylic acidKey activeEffect: HighUsed for skin exfoliation. It has an anti-inflammatory and anti-bacterial effect, helps to unclog pores, prevent blemishes and speed up healing of the existing ones. Sometimes referred to as a BHA (beta-hydroxy acid)~0.55–1.35%
Hydroxyethylpiperazine ethane sulfonic acidKey activeEffect: MediumUsed to regulate product's pH, but can be also used as an exfoliator when included in higher concentrations. There is a controversy about whether it can generate free radicals and induce skin cell damage when used in topical products~0.45–1.1%
Capryloyl salicylic acidKey activeEffect: High~0.2–0.7%
Anti-blemish
Side benefit the brand mentions · Niacinamide, Salicylic acid + 2 more
Works well
What the product description says
“Ultra-concentrated serum that targets breakouts”
Source: Lookfantastic

This product can help reduce breakouts and clogged pores because it contains the following ingredient: niacinamide, salicylic acid. These ingredients is used for treating acne and can have a noticeable effect.

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: capryloyl salicylic acid, glycolic acid

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3.1%
Salicylic acidHeroEffect: HighUsed for skin exfoliation. It has an anti-inflammatory and anti-bacterial effect, helps to unclog pores, prevent blemishes and speed up healing of the existing ones. Sometimes referred to as a BHA (beta-hydroxy acid)~0.55–1.35%
Glycolic acidKey activeEffect: MediumAn alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid~2.8–4.2%
Capryloyl salicylic acidKey activeEffect: Medium~0.2–0.7%
Anti-aging
Side benefit the brand mentions · Glycolic acid, Niacinamide
Works well
What the product description says
“Skin Care Concerns Home Skin Ceuticals Medical Skincare Dermatologist approved Teen & Pre-Teen Acne & Blemishes Fine Lines & Wrinkles Visible Pores Dark Circles & Puffiness Dull Skin Dry Skin Oily Skin Combination Skin Redness Pigmentation Dehydrated Skin Sensitive Skin”
Source: Cultbeauty

This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains glycolic acid, niacinamide.

Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.

Glycolic acidKey activeEffect: HighAn alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid~2.8–4.2%
NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3.1%

Can it cause trouble?

Irritancy
2 strong irritants: Alcohol denat., Parfum
Medium risk
We flagged 10 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Alcohol denat.Produces temporary toning effect. Can help dissolve other ingredients or preserve productsHigh~7.6–11.4%est.
Glycolic acidAn alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acidHigh~2.8–4.2%est.
Salicylic acidUsed for skin exfoliation. It has an anti-inflammatory and anti-bacterial effect, helps to unclog pores, prevent blemishes and speed up healing of the existing ones. Sometimes referred to as a BHA (beta-hydroxy acid)High~0.55–1.35%est.
Capryloyl salicylic acid—High~0.2–0.7%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.05–0.15%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~1.4–2.1%est.
Peg-60 hydrogenated castor oilHelps oil and water mix togetherMedium~0.6–1.4%est.
Hydroxyethylpiperazine ethane sulfonic acidUsed to regulate product's pH, but can be also used as an exfoliator when included in higher concentrations. There is a controversy about whether it can generate free radicals and induce skin cell damage when used in topical productsMedium~0.45–1.1%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.4–0.9%est.
Phytic acidAn alpha-hydroxy acid (AHA), but is mostly used to stabilize product formulations in cosmeticsMedium~0.05–0.3%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

User reviews

Would you recommend?
100%·yes

1 of 1 community members would buy it again.

100% would0% wouldn't
  • fernfatale· Mar 2023Recommends

    the only serum i trust to clear up my cystic acne

What reviewers noticed
Marker shows the average response

Ingredients

Filter by role to see what each ingredient is doing.

Water~40–60%
Formula
Irritation risk
Low

Plain old water

More about Water
Alcohol denat.~7.6–11.4%
Irritant · high
Irritation risk
High

Produces temporary toning effect. Can help dissolve other ingredients or preserve products

More about Alcohol denat.
Propanediol~3.7–5.6%
Formula
Irritation risk
Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol
Glycolic acid~2.8–4.2%
Key activeIrritant · high
Irritation risk
High
Works for
Anti-agingExfoliationEvens skin toneAnti-blemish

An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid

More about Glycolic acid
Niacinamide~2–3.1%
Hero · Moisturizing, Anti-blemish
Irritation risk
Low
Works for
Evens skin toneAnti-agingAnti-blemishMoisturizingReduces irritationAntibacterialAnti-inflammatoryReduces redness

Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production

More about Niacinamide
Dimethyl isosorbide~1.6–2.4%
Formula
Irritation risk
Low

Used to dissolve other ingredients in a product and can enhance their ability to penetrate the skin

More about Dimethyl isosorbide
Pentylene glycol~1.4–2.1%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to preserve products, dissolve other ingredients and create a nice product texture

More about Pentylene glycol
Salicylic acid~0.55–1.35%
Hero · Anti-blemishIrritant · high
Irritation risk
High
Works for
Anti-inflammatoryExfoliationAnti-blemishAntibacterialEvens skin tone

Used for skin exfoliation. It has an anti-inflammatory and anti-bacterial effect, helps to unclog pores, prevent blemishes and speed up healing of the existing ones. Sometimes referred to as a BHA (beta-hydroxy acid)

More about Salicylic acid
Sodium hydroxide~0.95–1.45%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Peg-60 hydrogenated castor oil~0.6–1.4%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Peg-60 hydrogenated castor oil
Hydroxyethylpiperazine ethane sulfonic acid~0.45–1.1%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Exfoliation

Used to regulate product's pH, but can be also used as an exfoliator when included in higher concentrations. There is a controversy about whether it can generate free radicals and induce skin cell damage when used in topical products

More about Hydroxyethylpiperazine ethane sulfonic acid
Citric acid~0.4–0.9%
Irritant · medium
Irritation risk
Medium

Can work as an exfoliant but is typically used to adjust the product pH

More about Citric acid
Peg-30 glyceryl cocoate~0.35–0.85%
Formula
Irritation risk
Low
Works for
Cleansing
More about Peg-30 glyceryl cocoate
Capryloyl salicylic acid~0.2–0.7%
Key activeIrritant · high
Irritation risk
High
Works for
ExfoliationEvens skin toneAnti-blemish
More about Capryloyl salicylic acid
Biosaccharide gum-1~0.15–0.5%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and is claimed to provide a longer-lasting hydration because of its ability to create a water-binding film on the surface of the skin

More about Biosaccharide gum-1
Maltodextrin~0.1–0.45%
Formula
Irritation risk
Low
Works for
Mattifying

Used to stabilize the product formulation and can help absorb oil

More about Maltodextrin
Phytic acid~0.05–0.3%
Irritant · medium
Irritation risk
Medium

An alpha-hydroxy acid (AHA), but is mostly used to stabilize product formulations in cosmetics

More about Phytic acid
Polyquaternium-10~0.05–0.25%
Formula
Irritation risk
Low

Helps soften the upper layer of the skin and create a nice product finish

More about Polyquaternium-10
Parfum~0.05–0.15%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Ingredient list view

Water, Alcohol denat., Propanediol, Glycolic acid, Niacinamide, Dimethyl isosorbide, Pentylene glycol, Salicylic acid, Sodium hydroxide, Peg-60 hydrogenated castor oil, Hydroxyethylpiperazine ethane sulfonic acid, Citric acid, Peg-30 glyceryl cocoate, Capryloyl salicylic acid, Biosaccharide gum-1, Maltodextrin, Phytic acid, Polyquaternium-10, Parfum

Compare prices

Retailers ranked by price — lowest first.

🇦🇺 Amazon Australia (AU)Price as of 11/12 00:04 GMT
≈ $13.02
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🇬🇧 Lookfantastic (UK)30 ml
≈ $44.44
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🇬🇧 Cultbeauty (UK)30 ml
≈ $55.55
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🇬🇧 Amazon UK (UK)Price as of 11/8 15:00 GMT
≈ $93.60
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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
La Roche-PosayEffaclar Serum for Blemish-Prone SkinYOUR PRODUCTFacileClear SerumGlossierSolutionTOUN28AHA + BHA + PHA Serum
Match—87%86%85%
Price—$38.00$30.00$37.90
Shared key ingredients—3 of 63 of 63 of 6
Key difference—Lactic AcidGluconolactoneGluconolactone
Irritancy Medium Low Low Low
Drying alcohol Contains drying alcohol ———
View product Shop Shop Shop

More alternatives: Moon Juice Acid Potion Resurfacing ExfoliatorUrban Skin Rx PHA + 10% Niacinamide Smaller Pores Serum

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Product summary

"La Roche-Posay - Effaclar Serum for Blemish-Prone Skin" is effective for: Anti-aging, Moisturizing, Anti-blemish, Evens skin tone and Exfoliation

Ingredient callouts

  • A good concentration of Niacinamide (2.00% - 3.10%). Niacinamide is a well-studied multi-tasking active. It is stable, and can work well in almost any hydrating formulation. There is solid evidence that Niacinamide can help support skin barrier, regulate oil production and reduce acne and clogged pores. It also helps to fight photodamage and improve the skin tone, reducing pigmentation marks.
  • This product contains acids (glycolic acid 2.80% - 4.20%). Their concentration is low, and they will not have a strong exfoliating effect. Instead, they work to support the skin natural acid mantle and to attract water (as humectants).
  • Salicylic acid (0.55% - 1.35%). This is an oil-soluble exfoliating acid. Because of this property, it can work inside pores and help reduce the congestion. It has an anti-inflammatory effect and is used to treat acne. Because it is a quite strong exfoliator, be careful with using this product too often: it could result in over-exfoliation.
  • Humectants (biosaccharide gum-1 0.15% - 0.65%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.

What our users say

Based on 1 review 100% recommend this product
  • When it comes to comedogenicity, the reviewer found that it does not clog pores.
They find the product's texture to be light and In terms of the smell, our users report that light fragrance - strong fragrance.

Price

The product retails for 50.96A$ in Australia, from 32.00£ up to 42.00£ in the United Kingdom and for 32.00$ in the United States.

For a detailed price comparison: click here.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 14 studies and safety reviews.

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La Roche-Posay Effaclar Serum for Blemish-Prone Skin
La Roche-PosayEffaclar Serum for Blemish-Prone Skin

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As an Amazon Associate, WIMJ earns from qualifying purchases.