La Roche-Posay Effaclar H Iso-Biome Moisturiser Versus COSRX Lightweight Soothing Moisturizer
Updated on December 03, 2024
Overview
What they are
These products are both reef safe general moisturizers. They have a total of 5 ingredients in common
Cool Features
They both contain 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, 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
La Roche-Posay Effaclar H Iso-Biome Moisturiser 25 ingredients
COSRX Lightweight Soothing Moisturizer 30 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
La Roche-Posay Effaclar H Iso-Biome Moisturiser 25 ingredients
COSRX Lightweight Soothing Moisturizer 30 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Squalane
Emollient
Dimethicone
Emollient
Panthenol
Skin Conditioning
Zea Mays Starch
AbsorbentNiacinamide
Smoothing
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingMyristyl Myristate
Emollient
Bixa Orellana Seed Extract
MaskingStearic Acid
Cleansing
Potassium Cetyl Phosphate
EmulsifyingGlyceryl Stearate Se
Emulsifying
Sodium Hydroxide
BufferingMyristic Acid
Cleansing
2-Oleamido-1,3-Octadecanediol
Skin ConditioningPalmitic Acid
Emollient
Hydroxyacetophenone
Antioxidant
Capryloyl Glycine
CleansingCaprylyl Glycol
EmollientVitreoscilla Ferment
Skin ConditioningCitric Acid
Buffering
Maltodextrin
AbsorbentXanthan Gum
EmulsifyingParfum
Masking
Water, Glycerin, Squalane, Dimethicone, Panthenol, Zea Mays Starch, Niacinamide, Ammonium Polyacryloyldimethyl Taurate, Myristyl Myristate, Bixa Orellana Seed Extract, Stearic Acid, Potassium Cetyl Phosphate, Glyceryl Stearate Se, Sodium Hydroxide, Myristic Acid, 2-Oleamido-1,3-Octadecanediol, Palmitic Acid, Hydroxyacetophenone, Capryloyl Glycine, Caprylyl Glycol, Vitreoscilla Ferment, Citric Acid, Maltodextrin, Xanthan Gum, Parfum
Propolis Extract
Skin Conditioning
Aloe Barbadensis Leaf Water
MaskingCamellia Sinensis Leaf Water
Masking
Butylene Glycol
Humectant
Cetyl Ethylhexanoate
EmollientGlycerin
Humectant
1,2-Hexanediol
Skin ConditioningNiacinamide
Smoothing
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingCyclomethicone
Emollient
Cetearyl Olivate
Betaine
Humectant
Cetearyl Alcohol
Emollient
Sorbitan Olivate
Emulsifying
Panthenol
Skin Conditioning
Ethylhexylglycerin
Skin ConditioningAllantoin
Skin Conditioning
Xanthan Gum
EmulsifyingDimethicone/Vinyl Dimethicone Crosspolymer
Skin ConditioningSodium Hyaluronate
Humectant
Arginine
Masking
Zinc PCA
Humectant
Betaine Salicylate
Antimicrobial
Mentha Haplocalix Extract
MaskingMenthyl Lactate
MaskingCitric Acid
Buffering
Melaleuca Alternifolia Leaf Oil
Antioxidant
Asiaticoside
Antioxidant
Asiatic Acid
Skin ConditioningMadecassic Acid
Skin Conditioning
Propolis Extract, Aloe Barbadensis Leaf Water, Camellia Sinensis Leaf Water, Butylene Glycol, Cetyl Ethylhexanoate, Glycerin, 1,2-Hexanediol, Niacinamide, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cyclomethicone, Cetearyl Olivate, Betaine, Cetearyl Alcohol, Sorbitan Olivate, Panthenol, Ethylhexylglycerin, Allantoin, Xanthan Gum, Dimethicone/Vinyl Dimethicone Crosspolymer, Sodium Hyaluronate, Arginine, Zinc PCA, Betaine Salicylate, Mentha Haplocalix Extract, Menthyl Lactate, Citric Acid, Melaleuca Alternifolia Leaf Oil, Asiaticoside, Asiatic Acid, Madecassic Acid
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 GlycerinPanthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.
There are two forms of panthenol: D and L.
D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
Learn more about PanthenolNiacinamide 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 NiacinamideCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidXanthan 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
La Roche-Posay Effaclar H Iso-Biome Moisturiser 25 ingredients
COSRX Lightweight Soothing Moisturizer 30 ingredients
Reviews
Here's what our community thinks
La Roche-Posay Effaclar H Iso-Biome Moisturiser 25 ingredients
My new holy grail! Perfect for the colder months - it keeps my face moisturized all day long, even in freezing weather. It doesn’t clog pores or cause breakouts. Although it's on the expensive side and the packaging is quite small, it's totally worth the splurge!
Gave me glass skin
COSRX Lightweight Soothing Moisturizer 30 ingredients
A really simple and totally inexpensive moisturizer. I've tried some similar products with a better performance, but considering how affordable this is, I think it really does a good job.
Some people consider it's not hydrating enough, but this is a product specifically formulated for oily skin types, so it will run short for people on the dry side. It also has like a cooling effect that feels Show more
I love this one so much. Started using it last summer. It's lightweight and it gives you a nice glow. If you prefer a matte look, you might not like it though because it does look a Lil shiny.it isn't moisturizing enough to use alone with tretinoin tho, so I'm on the search for another moisturizer for night time. I still love this one tho.
