Paula's Choice C5 Super Boost Moisturizer - US Versus Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++
Updated on January 27, 2025
Overview
What they are
These products are both reef safe . They have a total of 6 ingredients in common
Cool Features
They both contain hyaluronic acid, Vitamin C and Vitamin E
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any common allergens, parabens or sulfates
What's Inside
They both contain oils 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
Paula's Choice C5 Super Boost Moisturizer 47 ingredients
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 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
Paula's Choice C5 Super Boost Moisturizer 47 ingredients
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningDicaprylyl Carbonate
Emollient3-O-Ethyl Ascorbic Acid
Skin Conditioning
Dimethicone
Emollient
Butylene Glycol
Humectant
Polyglyceryl-6 Distearate
Emulsifying
Ascorbyl Glucoside
Antioxidant
Squalane
Emollient
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingAcetyl Sh-Hexapeptide-5 Amide Acetate
Skin Conditioning
Citrullus Lanatus Seed Oil
Emollient
Hydrogenated Lecithin
Emulsifying
Theobroma Cacao Seed Butter
Emollient
Hydrogenated Phosphatidylcholine
EmulsifyingPentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Sodium Hyaluronate
Humectant
Oryza Sativa Bran Extract
Skin Conditioning
Propanediol
Solvent
Jojoba Esters
Emollient
Tocopherol
Antioxidant
Acetyl Zingerone
Antioxidant
Cetyl Palmitate
Emollient
Caprylyl Glycol
EmollientCetyl Alcohol
Emollient
Polyglyceryl-3 Beeswax
Emulsifying
Sodium Hydroxide
BufferingSorbitan Olivate
Emulsifying
Sorbitan Palmitate
Emulsifying
Helianthus Annuus Extract
Emollient
Ethylhexylglycerin
Skin ConditioningHexylene Glycol
EmulsifyingSodium Phytate
Polysorbate 60
Emulsifying
Sorbitan Isostearate
Emulsifying
Lecithin
Emollient
Rosmarinus Officinalis Leaf Extract
AntimicrobialGlycine Soja Oil
Emollient
Lysolecithin
EmulsifyingBacillus Ferment
Skin Conditioning
Citric Acid
Buffering
Polyglutamic Acid
Skin Conditioning
Beta-Sitosterol
Emulsion Stabilising
Phytic Acid
Squalene
Emollient
Phenoxyethanol
Preservative
Sodium Benzoate
Masking
Potassium Sorbate
Preservative
Water, Dicaprylyl Carbonate, 3-O-Ethyl Ascorbic Acid, Dimethicone, Butylene Glycol, Polyglyceryl-6 Distearate, Ascorbyl Glucoside, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Acetyl Sh-Hexapeptide-5 Amide Acetate, Citrullus Lanatus Seed Oil, Hydrogenated Lecithin, Theobroma Cacao Seed Butter, Hydrogenated Phosphatidylcholine, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Hyaluronate, Oryza Sativa Bran Extract, Propanediol, Jojoba Esters, Tocopherol, Acetyl Zingerone, Cetyl Palmitate, Caprylyl Glycol, Cetyl Alcohol, Polyglyceryl-3 Beeswax, Sodium Hydroxide, Sorbitan Olivate, Sorbitan Palmitate, Helianthus Annuus Extract, Ethylhexylglycerin, Hexylene Glycol, Sodium Phytate, Polysorbate 60, Sorbitan Isostearate, Lecithin, Rosmarinus Officinalis Leaf Extract, Glycine Soja Oil, Lysolecithin, Bacillus Ferment, Citric Acid, Polyglutamic Acid, Beta-Sitosterol, Phytic Acid, Squalene, Phenoxyethanol, Sodium Benzoate, Potassium Sorbate
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
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 WaterButylene 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 GlycolSodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronatePropanediol 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 TocopherolEthylhexylglycerin (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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Paula's Choice C5 Super Boost Moisturizer 47 ingredients
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
Reviews
Here's what our community thinks
Round Lab Birch Moisturizing Sunscreen SPF 50+ PA++++ 40 ingredients
It's not the most hydrating sunscreen I've ever used and its texture is reminiscent of a slightly thick serum or an emulsion. It feels good on my skin and did not break me out. No white cast whatsoever, didn't require any blending in, and applied without a tacky finish. One of the sunscreens with the least pilling I've tried, but did very very very slightly pill on the area around the eyes after a Show more
Stung my face
I wanted to love it because so many people are praising it, but it just wasn't for me. I don't why, but it stung my face, and I'm not sure which ingredient is causing it (I don't have sensitive skin, but I used it alongside BoJ ginseng essence and iUnik centella calming gel cream in the morning, maybe the ingredients in the products react w each other?). It also makes me look oily, Show more
