Skin science article
Kosas Dreambeam Comfy Smooth Sunscreen SPF 40 Versus Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ PA++++
Kosas Dreambeam Comfy Smooth Sunscreen SPF 40 Versus Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ PA++++ This hybrid sunscreen covers the full UV range and blocks ~98% of UVB at SPF 40. This chemical sunscreen covers the full UV range and blocks ~98
Kosas Dreambeam Comfy Smooth Sunscreen SPF 40 Versus Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ PA++++
This hybrid sunscreen covers the full UV range and blocks ~98% of UVB at SPF 40.
This chemical sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Zinc Oxide 21.7%
Water
C13-15 Alkane
Caprylic/Capric Triglyceride
Butyloctyl Salicylate
Propanediol
Mica
Polyglyceryl-2 Dipolyhydroxystearate
Polyglyceryl-3 Diisostearate
Silica
C12-15 Alkyl Benzoate
Polyglyceryl-3 Polyricinoleate
Galactoarabinan
Allantoin
Fructooligosaccharides
Bioflavonoids
Glycoproteins
Bisabolol
Ceramide Ng
Lactic Acid
Sodium Hyaluronate
Palmitoyl Hexapeptide-12
Cyamopsis Tetragonoloba Gum
Tocopheryl Acetate
Disteardimonium Hectorite
Glycerin
Polyhydroxystearic Acid
Tribehenin
Isostearic Acid
Lecithin
Xanthan Gum
Sodium Chloride
Phytic Acid
Pentylene Glycol
Phenethyl Alcohol
CI 77891
CI 77491
CI 77492
Zinc Oxide 21.7%, Water, C13-15 Alkane, Caprylic/Capric Triglyceride, Butyloctyl Salicylate, Propanediol, Mica, Polyglyceryl-2 Dipolyhydroxystearate, Polyglyceryl-3 Diisostearate, Silica, C12-15 Alkyl Benzoate, Polyglyceryl-3 Polyricinoleate, Galactoarabinan, Allantoin, Fructooligosaccharides, Bioflavonoids, Glycoproteins, Bisabolol, Ceramide Ng, Lactic Acid, Sodium Hyaluronate, Palmitoyl Hexapeptide-12, Cyamopsis Tetragonoloba Gum, Tocopheryl Acetate, Disteardimonium Hectorite, Glycerin, Polyhydroxystearic Acid, Tribehenin, Isostearic Acid, Lecithin, Xanthan Gum, Sodium Chloride, Phytic Acid, Pentylene Glycol, Phenethyl Alcohol, CI 77891, CI 77491, CI 77492
Dibutyl Adipate
Diethylamino Hydroxybenzoyl Hexyl Benzoate
Polymethylsilsesquioxane
Ethylhexyl Triazone
Niacinamide
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol
Coco-Caprylate/Caprate
Caprylyl Methicone
Diethylhexyl Butamido Triazone
1,2-Hexanediol
Butylene Glycol
Oryza Sativa Extract
Oryza Sativa Germ Extract
Camellia Sinensis Leaf Extract
Lactobacillus/Pumpkin Ferment Extract
Bacillus/Soybean Ferment Extract
Saccharum Officinarum Extract
Macrocystis Pyrifera Extract
Cocos Nucifera Fruit Extract
Panax Ginseng Root Extract
Monascus/Rice Ferment
Behenyl Alcohol
Poly C10-30 Alkyl Acrylate
Polyglyceryl-3 Methylglucose Distearate
Decyl Glucoside
Tromethamine
Carbomer
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Sodium Stearoyl Glutamate
Polyacrylate Crosspolymer-6
Adenosine
T-Butyl Alcohol
Tocopherol
Lactobacillus/Rice Ferment
Aspergillus Ferment
Saccharomyces/Rice Ferment Filtrate
Ethylhexylglycerin
Water, 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, Oryza Sativa Extract, Oryza Sativa Germ Extract, Camellia Sinensis Leaf Extract, Lactobacillus/Pumpkin Ferment Extract, Bacillus/Soybean Ferment Extract, Saccharum Officinarum Extract, Macrocystis Pyrifera Extract, Cocos Nucifera Fruit Extract, Panax Ginseng Root Extract, Monascus/Rice Ferment, Behenyl Alcohol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Decyl Glucoside, Tromethamine, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Polyacrylate Crosspolymer-6, Adenosine, Xanthan Gum, T-Butyl Alcohol, Tocopherol, Lactobacillus/Rice Ferment, Aspergillus Ferment, Saccharomyces/Rice Ferment Filtrate, Pentylene Glycol, Ethylhexylglycerin
Reviews
Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
Topically, glycerin does several things at once:
Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
Just know very high concentrations (>40%) can feel tacky in low humidity.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula:
Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses.
On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations.
Typical use levels in a formula run about 1-5%.
Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
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.
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. Remember to stay hydrated!
Xanthan 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.