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La Roche-Posay EFFACLAR K+ Ingredients Explained

3.0   from 3 ratings
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Published on March 11, 2022 Submitted by lonakha

Overview

What it is

General moisturizer with 24 ingredients that contains BHA, exfoliants and Vitamin E

Cool Features

It is reef safe

Suited For

It has ingredients that are good for fighting acne, brightening skin, oily skin, reducing pores and scar healing

Free From

It doesn't contain any harsh alcohols, common allergens, oils, parabens or sulfates

Fun facts

La Roche-Posay is from France. This product is used in 203 routines created by our community.

We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.

You should know

Here's our breakdown of the notable ingredients, benefits, and concerns we determined from the ingredients in this product. Click any item to learn more.

Notable Ingredients

BHA
Vitamin E
Exfoliators

Benefits

Good For Oily Skin
Reduces Large Pores
Scar Healing (2)
Acne Fighting (2)
Brightening (2)

Concerns

Drying
Irritating
Rosacea (3)
Eczema (4)

Ingredient Info

Click any item below to learn more and view relevant ingredients.
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free

Ingredients Overview

Here's our quick-to-read summary of the ingredients in this product. Keep scrolling if you'd like to learn more about what each ingredient does!
Ingredient
Features
1
Skin Conditioning, Solvent
2
Humectant, Skin Conditioning, Solvent
0 / 0
May worsen Eczema Icon
3
Emollient, Masking
4
Emollient, Skin Conditioning, Skin Protecting
1 / 0
Silicon Icon
5
0 / 0
Not safe for Fungal Acne Icon
6
Emollient, Emulsifying
1 / 0
Not safe for Fungal Acne Icon
7
Masking, Preservative, Skin Conditioning
BHA IconPreservative IconCan worsen Dry Skin IconGood for Oily Skin IconMay cause irritation IconGood for Minimizing Pores IconGood for Scar Healing IconHelps fight Acne IconMay worsen Eczema IconMay worsen Rosacea IconHelps brighten skin Icon
8
Emulsion Stabilising
9
Humectant, Skin Conditioning
Good for Scar Healing IconHelps fight Acne Icon
10
Skin Conditioning
11
Buffering
12
Abrasive, Absorbent
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon
13
Emollient, Emulsion Stabilising, Skin Conditioning
14
Absorbent
15
Skin Conditioning
16
17
Skin Conditioning
18
Emulsifying, Emulsion Stabilising, Gel Forming, Skin Conditioning
19
Skin Conditioning, Solvent
20
21
Emollient, Emulsifying, Emulsion Stabilising, Masking
2 / 2
Fatty Alcohol Icon
22
Humectant, Masking, Skin Conditioning, Solvent
1 / 0
23
Antioxidant, Masking, Skin Conditioning
0-3 / 0-3
Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconMay cause irritation IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin Icon
24
Masking, Perfuming
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Ingredients Explained

This product contains 24 ingredients. Click on any ingredient to learn more about it
1
What it does: Skin Conditioning, Solvent
Community Rating: Loved

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
2
What it does: Humectant, Skin Conditioning, Solvent
Community Rating: Very Disliked

Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.

Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.

This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.

Those with sensitive skin or conditions may deliver a rash when using this ingredient.

Learn more about Propylene Glycol
3
What it does: Emollient, Masking
Community Rating: Disliked

Octyldodecanol is a fatty alcohol. It is primarily used to enhance the texture of products.

As an emulsifier, Octyldodecanol helps prevent the oils and waters from separating. It also prevents ingredients from creating foam when shaken.

Octyldodecanol is created by reducing fatty acid to an alcohol.

Due to its high molecular weight, it does not get absorbed into the skin.

Learn more about Octyldodecanol
4
What it does: Emollient, Skin Conditioning, Skin Protecting
Community Rating: Very Disliked

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

Dimethicone has been found increase absorption in skin, boosting the benefits of other ingredients. While there is concern for the safety of dimethicone, the levels used in skincare are safe for use.

5
What it does:
Community Rating: Very Disliked

Peg-100 Stearate is an emollient and emulsifier. PEGS are a hydrophilic polyether compound . There are 100 ethylene oxide monomers in Peg-100 Stearate. Peg-100 Stearate is polyethylene glycol ester of stearic acid.

Peg-100 Stearate helps keep skin soft by trapping moisture in. It helps prevent oil and water from separating in a product. By binding oil and water, it helps remove dirt and oil to be rinsed away.

6
What it does: Emollient, Emulsifying
Community Rating: Disliked

Glyceryl Stearate is a mix of glycerin and stearic acid.

Glyceryl Stearate is used to stabilize the mixing of water and oil ingredients. By preventing these ingredients from separating, it can help elongate shelf life. It can also help thicken the product's texture.

As an emollient, it helps soften skin and supports barrier-replenishing ingredients.

In cosmetics, Glyceryl Stearate is often made from vegetable oils or synthetically produced. The human body also creates Glyceryl Stearate naturally.

Learn more about Glyceryl Stearate
7
What it does: Masking, Preservative, Skin Conditioning
Community Rating: Liked

Salicylic Acid (also known as beta hydroxy acid or BHA) is one of the most well-known ingredients for treating skin that struggles with blackheads and acne. It helps to exfoliate both the skin's surface and pores, and also acts as an anti-inflammatory agent.

This multitasking property makes it a great ingredient for cleaning out pores, controlling oil production, and reducing inflammation.

Unlike AHAs which are water soluble, Salicylic Acid is oil soluble. This means that it's able to exfoliate the inside of pores and reduce blackheads.

Concentrations of 0.5-2% are recognized by the U.S. FDA as an over-the-counter topical acne product.

It can cause irritation and/or dryness if one's skin already has a compromised moisture barrier, so it's best to focus on repairing that before introducing a Salicylic Acid into your routine.

In general, Salicylic Acid is a great ingredient for oily acne-prone skin.

While salicylic acid does not increase sun-sensitivity, we still recommend wearing SPF.

If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.

Learn more about Salicylic Acid
8
What it does: Emulsion Stabilising
Community Rating: Liked

Ammonium Polyacryloyldimethyl Taurate is a polymer made from ammonium salts. It helps add stability and texture to a product.

Ammonium Polyacryloyldimethyl Taurate is stable over a wide pH range. Due to its ability to absorb water, it can help thicken the texture of a product.

As an emulsion stabilizer, this ingredient is able to stabilize and mix the other ingredients. This creates a consistent texture.

Learn more about Ammonium Polyacryloyldimethyl Taurate
9
What it does: Humectant, Skin Conditioning
Community Rating: Loved

Zinc PCA (or "zinc salt") differs slightly from zinc itself. PCA stands for pyrrolidone carboxylic acid. However, Zinc PCA comes from zinc.

It can help reduce redness, regulate sebum, and promote the general healing process of the skin.

Zinc PCA tends to be especially useful for those with oily, acne-prone skin. It's certainly an ingredient worth trying out!

Learn more about Zinc PCA
10
What it does: Skin Conditioning
Community Rating: Loved

Sarcosine is a skin conditioning ingredient. It is a synthetic amino acid.

It is an intermediate and byproduct in glycine synthesis and degradation. Glycine is an amino acid naturally found in our skin.

11
What it does: Buffering
Community Rating: Mixed

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Learn more about Sodium Hydroxide
12
What it does: Abrasive, Absorbent
Community Rating: Disliked

Silica is a mineral naturally found in our skin. It helps to thicken and smooth the texture of a product. It also acts as an agent for other ingredients by increasing the absorption of other ingredients into the skin.

Silica is often used for absorption and can help reduce shine when products are applied. Silica occurs in naturally in materials like clay and sandstone, and it can also be produced synthetically.

Silica is present naturally within the skin during collagen production and when reducing inflammation.

Learn more about Silica
13
What it does: Emollient, Emulsion Stabilising, Skin Conditioning
Community Rating: Mixed

Silica Silylate is a siloxane polymer, meaning it is made up of silicon and oxygen atoms. It is not soluble in water.

This ingredient is a white powder with oil-absorbing, emollient, and anticaking properties.

14
What it does: Absorbent
Community Rating: Liked

We don't have a description for Perlite.

15
What it does: Skin Conditioning
Community Rating: Loved

We don't have a description for Carnosine.

16
What it does:
Community Rating: Disliked

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA
17
What it does: Skin Conditioning
Community Rating: Liked

We don't have a description for Capryloyl Salicylic Acid.

18
What it does: Emulsifying, Emulsion Stabilising, Gel Forming, Skin Conditioning
Community Rating: Disliked

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

Learn more about Xanthan Gum
19
What it does: Skin Conditioning, Solvent
Community Rating: Mixed

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.

This property also makes Pentylene Glycol a great texture enhancer. It can help thicken or emulsify a product. Emulsifiers help stabilize a product. It does this by preventing certain ingredients from separating.

Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.

Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.

Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.

Learn more about Pentylene Glycol
20
What it does:
Community Rating: Disliked

Acrylates Copolymer is used as a film-forming agent and texture enhancer.

After applied, Acrylates Copolymer forms a thin film cover that helps skin feel more soft. It can help sunscreens become more water-resistant.

It is also used to make a product more thick.

Learn more about Acrylates Copolymer
21
What it does: Emollient, Emulsifying, Emulsion Stabilising, Masking
Community Rating: Very Disliked

Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.

Cetyl Alcohol is not related to SD alcohol, denatured alcohol, or ethyl alcohol. The FDA allows products labeled "alcohol-free" to have fatty alcohols.

22
What it does: Humectant, Masking, Skin Conditioning, Solvent
Community Rating: Mixed

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.

Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.

23
What it does: Antioxidant, Masking, Skin Conditioning
Community Rating: Liked

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.

Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.

You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.

There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.

Learn more about Tocopherol
24
What it does: Masking, Perfuming
Community Rating: Very Disliked

Parfum is a catch-all term for an ingredient or more that is used to give aroma to products. Parfum, or fragrance, can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "Parfum" in the ingredients list is a different mixture.

In the US, the alternative name for parfum is 'fragrance'. The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance. One example is Calendula flower extract. Essential oil ingredients still impart a scent or 'fragrance'.

Depending on the blend, it can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Products use parfum often to give products a scent or cover up smells of different ingredients.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Learn more about Parfum
Embed Ingredients

Here's what our community thinks of the 24 ingredients in this product ✨

38% are loved or liked
17% have mixed ratings
46% are disliked or very disliked
0% have no rating yet

When to use

We've created a guide with info on when you should use La Roche-Posay EFFACLAR K+. We've also included some recommended products to use it with, as well as some routine inspiration!

Read our guide on when to use EFFACLAR K+ ->
Verified by SkinSort

We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.

The data we've presented on this page has been verified by a member of the SkinSort Team.

Read more about us

Reviews

3.0 /5
from 3 ratings
KaterinaLaskaraki_411's avatar

KaterinaLaskaraki_411

9 months ago Β· Oily Skin
Review

i dont see a change on my skin. it is still oily with black spots. I use this product since a year ago but Im dissapointed.