Kiehl's Expertly Clear Acne-Treating & Preventing Lotion Versus La Roche-Posay Effaclar Duo+M
Updated on October 18, 2024
Overview
What they are
These products are both reef safe . They have a total of 11 ingredients in common
Cool Features
They both contain BHA and niacinamide
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, oils, parabens or sulfates
What's Inside
They both contain silicones
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Kiehl's Expertly Clear Acne-Treating & Preventing Lotion 27 ingredients
La Roche-Posay Effaclar Duo+M 35 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Kiehl's Expertly Clear Acne-Treating & Preventing Lotion 27 ingredients
La Roche-Posay Effaclar Duo+M 35 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Niacinamide
Smoothing
Dimethicone
Emollient
Cetearyl Alcohol
Emollient
Isohexadecane
EmollientSodium Hydroxide
BufferingAmmonium Polyacryloyldimethyl Taurate
Emulsion StabilisingLaureth-4
Emulsifying
Polyacrylate Crosspolymer-6
Emulsion StabilisingPropylene Glycol
Humectant
Dipotassium Glycyrrhizate
Humectant
Hydroxyethylcellulose
Emulsion StabilisingDimethiconol
Emollient
Trisodium Ethylenediamine Disuccinate
Zinc PCA
Humectant
Glyceryl Stearate
Emollient
PEG-100 Stearate
Silica Silylate
EmollientHydroxypropyl Starch Phosphate
Maltodextrin
AbsorbentMenthol
Masking
Lactobacillus Ferment
Skin ConditioningSalvia Officinalis Leaf Extract
CleansingChamomilla Recutita Flower Extract
Masking
Salicylic Acid 1.2%
Masking
Water, Glycerin, Butylene Glycol, Niacinamide, Dimethicone, Cetearyl Alcohol, Isohexadecane, Sodium Hydroxide, Ammonium Polyacryloyldimethyl Taurate, Laureth-4, Polyacrylate Crosspolymer-6, Propylene Glycol, Dipotassium Glycyrrhizate, Hydroxyethylcellulose, Dimethiconol, Trisodium Ethylenediamine Disuccinate, Zinc PCA, Glyceryl Stearate, PEG-100 Stearate, Silica Silylate, Hydroxypropyl Starch Phosphate, Maltodextrin, Menthol, Lactobacillus Ferment, Salvia Officinalis Leaf Extract, Chamomilla Recutita Flower Extract, Salicylic Acid 1.2%
Water
Skin ConditioningGlycerin
Humectant
Dimethicone
Emollient
Isocetyl Stearate
Emollient
Niacinamide
Smoothing
Isopropyl Lauroyl Sarcosinate
Skin ConditioningSilica
Abrasive
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingOryza Sativa Starch
AbsorbentPunica Granatum Pericarp Extract
Skin ConditioningPotassium Cetyl Phosphate
EmulsifyingSorbitan Oleate
Emulsifying
Zinc PCA
Humectant
Glyceryl Stearate Se
Emulsifying
Isohexadecane
EmollientSodium Hydroxide
BufferingMyristyl Myristate
Emollient
2-Oleamido-1,3-Octadecanediol
Skin ConditioningMannose
HumectantPoloxamer 338
EmulsifyingPropanediol
SolventHydroxyethoxyphenyl Butanone
Preservative
Capryloyl Salicylic Acid
Exfoliating
Caprylyl Glycol
EmollientVitreoscilla Ferment
Skin ConditioningCitric Acid
Buffering
Trisodium Ethylenediamine Disuccinate
Maltodextrin
AbsorbentXanthan Gum
EmulsifyingPentylene Glycol
Skin ConditioningPolysorbate 80
Emulsifying
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
Emulsion StabilisingSalicylic Acid
Masking
Piroctone Olamine
Preservative
Parfum
Masking
Water, Glycerin, Dimethicone, Isocetyl Stearate, Niacinamide, Isopropyl Lauroyl Sarcosinate, Silica, Ammonium Polyacryloyldimethyl Taurate, Oryza Sativa Starch, Punica Granatum Pericarp Extract, Potassium Cetyl Phosphate, Sorbitan Oleate, Zinc PCA, Glyceryl Stearate Se, Isohexadecane, Sodium Hydroxide, Myristyl Myristate, 2-Oleamido-1,3-Octadecanediol, Mannose, Poloxamer 338, Propanediol, Hydroxyethoxyphenyl Butanone, Capryloyl Salicylic Acid, Caprylyl Glycol, Vitreoscilla Ferment, Citric Acid, Trisodium Ethylenediamine Disuccinate, Maltodextrin, Xanthan Gum, Pentylene Glycol, Polysorbate 80, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Salicylic Acid, Piroctone Olamine, Parfum
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterGlycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinNiacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about NiacinamideDimethicone is a type of synthetic silicone created from natural materials such as quartz.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
Learn more about DimethiconeIsohexadecane is added to enhance texture, emulsify, and to help cleanse. It is an isoparrafin. It is a component of petrolatum.
Due to its large size, Isohexadecane is not absorbed by the skin. Instead, it sits on top and acts as an emollient. Emollients help keep your skin soft and smooth by trapping moisture within.
Isohexadecane is often used in products designed to help oily skin. It is lightweight and non-greasy while helping to moisturize. When mixed with silicones, it gives a product a silky feel.
Learn more about IsohexadecaneSodium 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 HydroxideAmmonium Polyacryloyldimethyl Taurate is a polymer made from ammonium salts. It helps add stability and texture to a product. This ingredient 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 stabilizes other ingredients to create a consistent texture.
According to a manufacturer, it helps create a "smooth, light and fresh" texture.
Learn more about Ammonium Polyacryloyldimethyl TaurateTrisodium Ethylenediamine Disuccinate is used to help stabilize a product.
It is a chelating agent, meaning it helps prevent metal ions from binding to other ingredients. This prevents unwanted reactions in products. Metal ions can come into a product via the water ingredient. They are found in trace amounts and are not known to be harmful.
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 PCAMaltodextrin is a polysaccharide. It is derived from starch such as rice, corn, wheat, or potato starch.
In food, Maltodextrin is used to improve the texture and thicken a product. Due to its structure, it can help create a gel texture. As an emulsion stabilizer, it helps keep the ingredients in a product together.
As a polysaccharide, Maltodextrin has moisturizing properties. Polysaccharides are a type of carbohydrate. The top layer of skin uses polysaccharides to retain water, keeping the skin hydrated.
Maltodextrin is water soluble and has a sweet taste.
Learn more about MaltodextrinSalicylic 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 AcidIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Kiehl's Expertly Clear Acne-Treating & Preventing Lotion 27 ingredients
La Roche-Posay Effaclar Duo+M 35 ingredients
Reviews
Here's what our community thinks
Kiehl's Expertly Clear Acne-Treating & Preventing Lotion 27 ingredients
La Roche-Posay Effaclar Duo+M 35 ingredients
Doesn't do magic but definitely works well if you have some smaller pimples or you're dealing with some marks
Did a decent job of reducing irritation during A-B testing on half of my face as a spot treatment, but not as effective in speeding up the healing process. May clash with benzoyl peroxide treatments.
