COSRX AC Collection Ultimate Spot Cream Versus La Roche-Posay Effaclar Duo [+] SPF 30 - UK
Updated on January 30, 2025
Overview
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, scar healing and dark spots
Free From
They both do not contain any common allergens, parabens or sulfates
What's Inside
They both contain fragrances and 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
COSRX AC Collection Ultimate Spot Cream 24 ingredients
La Roche-Posay Effaclar Duo [+] SPF 30 34 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
COSRX AC Collection Ultimate Spot Cream 24 ingredients
La Roche-Posay Effaclar Duo [+] SPF 30 34 ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Aloe Barbadensis Leaf Water
MaskingButylene Glycol
Humectant
Helianthus Annuus Seed Oil
Emollient
Glycerin
Humectant
Zinc Oxide
Cosmetic Colorant
Cetearyl Alcohol
Emollient
Dimethyl Sulfone
SolventBetaine
Humectant
Polysorbate 60
Emulsifying
Elaeis Guineensis Oil
Emollient
Elaeis Guineensis Kernel Oil
Emollient
Cetearyl Olivate
Sorbitan Olivate
Emulsifying
1,2-Hexanediol
Skin ConditioningCalamine
AbsorbentDimethicone
Emollient
Illicium Verum Fruit Extract
Perfuming
Scutellaria Baicalensis Root Extract
AstringentXanthan Gum
EmulsifyingMelaleuca Alternifolia Leaf Oil
Antioxidant
Ethyl Hexanediol
SolventAsiaticoside
Antioxidant
Asiatic Acid
Skin ConditioningMadecassic Acid
Skin Conditioning
Aloe Barbadensis Leaf Water, Butylene Glycol, Helianthus Annuus Seed Oil, Glycerin, Zinc Oxide, Cetearyl Alcohol, Dimethyl Sulfone, Betaine, Polysorbate 60, Elaeis Guineensis Oil, Elaeis Guineensis Kernel Oil, Cetearyl Olivate, Sorbitan Olivate, 1,2-Hexanediol, Calamine, Dimethicone, Illicium Verum Fruit Extract, Scutellaria Baicalensis Root Extract, Xanthan Gum, Melaleuca Alternifolia Leaf Oil, Ethyl Hexanediol, Asiaticoside, Asiatic Acid, Madecassic Acid
Water
Skin ConditioningOctocrylene
UV Absorber
Glycerin
Humectant
Homosalate
Skin Conditioning
Ethylhexyl Salicylate
UV Absorber
Alcohol Denat.
Antimicrobial
Niacinamide
Smoothing
Butyl Methoxydibenzoylmethane
UV Absorber
Dimethicone
Emollient
Sorbitan Stearate
Emulsifying
Silica
Abrasive
Isopropyl Lauroyl Sarcosinate
Skin ConditioningStyrene/Acrylates Copolymer
Propylene Glycol
Humectant
Potassium Cetyl Phosphate
EmulsifyingDiisopropyl Sebacate
EmollientPEG-20
HumectantPEG-8 Laurate
Emulsifying
Zinc PCA
Humectant
Dimethicone/Vinyl Dimethicone Crosspolymer
Skin ConditioningOleamide
2-Oleamido-1,3-Octadecanediol
Skin ConditioningInulin Lauryl Carbamate
Emulsion StabilisingCarnosine
Skin ConditioningPoloxamer 338
EmulsifyingAmmonium Polyacryloyldimethyl Taurate
Emulsion StabilisingDisodium EDTA
Sucrose Cocoate
Emulsifying
Capryloyl Salicylic Acid
Exfoliating
Xanthan Gum
EmulsifyingT-Butyl Alcohol
Perfuming
BHT
Antioxidant
Salicylic Acid
Masking
Parfum
Masking
Water, Octocrylene, Glycerin, Homosalate, Ethylhexyl Salicylate, Alcohol Denat., Niacinamide, Butyl Methoxydibenzoylmethane, Dimethicone, Sorbitan Stearate, Silica, Isopropyl Lauroyl Sarcosinate, Styrene/Acrylates Copolymer, Propylene Glycol, Potassium Cetyl Phosphate, Diisopropyl Sebacate, PEG-20, PEG-8 Laurate, Zinc PCA, Dimethicone/Vinyl Dimethicone Crosspolymer, Oleamide, 2-Oleamido-1,3-Octadecanediol, Inulin Lauryl Carbamate, Carnosine, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Sucrose Cocoate, Capryloyl Salicylic Acid, Xanthan Gum, T-Butyl Alcohol, BHT, Salicylic Acid, Parfum
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Glycerin 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 GlycerinDimethicone 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 DimethiconeXanthan 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 GumIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
COSRX AC Collection Ultimate Spot Cream 24 ingredients
La Roche-Posay Effaclar Duo [+] SPF 30 34 ingredients
Reviews
Here's what our community thinks
COSRX AC Collection Ultimate Spot Cream 24 ingredients
Doesn't do much and it broke me out also I don't get the texture of this for a spot treatment
Initially I didn't like this but it was because the directions were not very clear to me. Even here on Skinsort it would line it up in the middle of the routine. Probably my fault in not using it right but now, I lather on a thick layer on any blemish or even on dark spots left from older acne before going to bed as the very last step. In the morning the blemishes are either gone or very much Show more
La Roche-Posay Effaclar Duo [+] SPF 30 34 ingredients
Great product but not great moisturizer
I used this product for a month. It has done great job for my acne prone skin and caused no break outs. However, it is not a great moisturizer itself. I mostly used it before my actuall moisturizer. Plus, it has spf.
