Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ Versus COSRX Vitamin E Vitalizing Sunscreen SPF 50+ - US
Updated on June 23, 2025
Overview
What they are
These products are both sunscreens. They have a total of 7 ingredients in common
Cool Features
They both contain SPF and Vitamin E
Suited For
They're both likely to be good for anti aging, dry skin and scar healing
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
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
COSRX Vitamin E Vitalizing Sunscreen SPF 50+ 35 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
COSRX Vitamin E Vitalizing Sunscreen SPF 50+ 35 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningDibutyl Adipate
EmollientPropanediol
Solvent
Diethylamino Hydroxybenzoyl Hexyl Benzoate
UV Filter
Polymethylsilsesquioxane
Ethylhexyl Triazone
UV Absorber
Niacinamide
Smoothing
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol
UV Filter
Coco-Caprylate/Caprate
Emollient
Caprylyl Methicone
Skin Conditioning
Diethylhexyl Butamido Triazone
UV Absorber
Glycerin
Humectant
1,2-Hexanediol
Skin Conditioning
Butylene Glycol
Humectant
Betula Platyphylla Japonica Juice
Skin Conditioning
Sodium Hyaluronate
Humectant
Hyaluronic Acid
Humectant
Glyceryl Glucoside
Humectant
Dipotassium Glycyrrhizate
Humectant
Allantoin
Skin Conditioning
Portulaca Oleracea Extract
Skin Conditioning
Artemisia Annua Extract
MaskingPinus Sylvestris Leaf Oil
Masking
Anthemis Nobilis Flower Oil
Masking
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingSodium Stearoyl Glutamate
CleansingPolyacrylate Crosspolymer-6
Emulsion StabilisingEthylhexylglycerin
Skin ConditioningAscorbic Acid
Antioxidant
Adenosine
Skin Conditioning
Pentylene Glycol
Skin ConditioningBehenyl Alcohol
Emollient
Poly C10-30 Alkyl Acrylate
Emulsion StabilisingPolyglyceryl-3 Methylglucose Distearate
Emulsifying
Decyl Glucoside
CleansingTromethamine
BufferingXanthan Gum
EmulsifyingT-Butyl Alcohol
Perfuming
Tocopherol
Antioxidant
Carbomer
Emulsion StabilisingWater, Dibutyl Adipate, Propanediol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Polymethylsilsesquioxane, Ethylhexyl Triazone, Niacinamide, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Coco-Caprylate/Caprate, Caprylyl Methicone, Diethylhexyl Butamido Triazone, Glycerin, 1,2-Hexanediol, Butylene Glycol, Betula Platyphylla Japonica Juice, Sodium Hyaluronate, Hyaluronic Acid, Glyceryl Glucoside, Dipotassium Glycyrrhizate, Allantoin, Portulaca Oleracea Extract, Artemisia Annua Extract, Pinus Sylvestris Leaf Oil, Anthemis Nobilis Flower Oil, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Polyacrylate Crosspolymer-6, Ethylhexylglycerin, Ascorbic Acid, Adenosine, Pentylene Glycol, Behenyl Alcohol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Decyl Glucoside, Tromethamine, Xanthan Gum, T-Butyl Alcohol, Tocopherol, Carbomer
Water
Skin ConditioningPropanediol
Solvent
Homosalate
Skin Conditioning
Octocrylene
UV Absorber
Ethylhexyl Salicylate
UV Absorber
Butyloctyl Salicylate
Skin Conditioning
Butyl Methoxydibenzoylmethane
UV Absorber
Diphenylsiloxy Phenyl Trimethicone
Skin Conditioning
Dimethicone
Emollient
Vp/Eicosene Copolymer
Silica
Abrasive
Trisiloxane
Skin Conditioning
Cyclopentasiloxane
Emollient
Trimethylsiloxysilicate
Emollient
1,2-Hexanediol
Skin Conditioning
Behenyl Alcohol
Emollient
Glyceryl Stearate
Emollient
PEG-100 Stearate
C14-22 Alcohols
Emulsion StabilisingCetyl Alcohol
Emollient
Potassium Cetyl Phosphate
EmulsifyingPolyacrylate-13
Polyisobutene
Parfum
Masking
C12-20 Alkyl Glucoside
EmulsifyingButylene Glycol
Humectant
Disodium EDTA
Ethylhexylglycerin
Skin ConditioningPolysorbate 20
Emulsifying
Sorbitan Isostearate
Emulsifying
Dextrin
AbsorbentTheobroma Cacao Extract
Skin ConditioningGossypium Herbaceum Extract
Skin ConditioningGlucose
Humectant
Tocopherol
Antioxidant
Water, Propanediol, Homosalate, Octocrylene, Ethylhexyl Salicylate, Butyloctyl Salicylate, Butyl Methoxydibenzoylmethane, Diphenylsiloxy Phenyl Trimethicone, Dimethicone, Vp/Eicosene Copolymer, Silica, Trisiloxane, Cyclopentasiloxane, Trimethylsiloxysilicate, 1,2-Hexanediol, Behenyl Alcohol, Glyceryl Stearate, PEG-100 Stearate, C14-22 Alcohols, Cetyl Alcohol, Potassium Cetyl Phosphate, Polyacrylate-13, Polyisobutene, Parfum, C12-20 Alkyl Glucoside, Butylene Glycol, Disodium EDTA, Ethylhexylglycerin, Polysorbate 20, Sorbitan Isostearate, Dextrin, Theobroma Cacao Extract, Gossypium Herbaceum Extract, Glucose, Tocopherol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.Â
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservativesÂ
Behenyl Alcohol is a type of fatty alcohol (these are different from the drying, solvent alcohols).
Fatty Alcohols have hydrating properties and are most often used as an emollient or to thicken a product. They are usually derived from natural fats and oils; behenyl alcohol is derived from the fats of vegetable oils.
Emollients help keep your skin soft and hydrated by creating a film that traps moisture in.
In 2000, Behenyl Alcohol was approved by the US as medicine to reduce the duration of cold sores.
Learn more about Behenyl AlcoholButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolEthylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.
Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.Â
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolTocopherol (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 TocopherolWater. 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 WaterIngredient Ratings
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When to use
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
COSRX Vitamin E Vitalizing Sunscreen SPF 50+ 35 ingredients
Reviews
Here's what our community thinks
