Dr. Althea Green Tea Fresh Sunscreen SPF 50+ Versus Kiehl's Better Screen UV Serum SPF 50+ Facial Sunscreen With Collagen Peptide
This chemical sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50.
This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropanediol
Solvent
Camellia Sinensis Leaf Water
Masking
Dibutyl Adipate
EmollientEthylhexyl Triazone
UV Absorber
Polymethylsilsesquioxane
Diisopropyl Sebacate
EmollientButyloctyl Salicylate
Skin Conditioning
Diethylamino Hydroxybenzoyl Hexyl Benzoate
UV Filter
Niacinamide
Smoothing
Drometrizole Trisiloxane
UV Absorber
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol
UV Filter
Caprylyl Methicone
Skin Conditioning
Butylene Glycol
Humectant
1,2-Hexanediol
Skin Conditioning
Pentylene Glycol
Skin Conditioning
Behenyl Alcohol
Emollient
Polyglyceryl-3 Methylglucose Distearate
Emulsifying
Polyglyceryl-6 Distearate
Emulsifying
Decyl Glucoside
Cleansing
Tromethamine
BufferingCandelilla/Jojoba/Rice Bran Polyglyceryl-3 Esters
Emulsifying
Carbomer
Emulsion StabilisingAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingSodium Stearoyl Glutamate
CleansingPolyacrylate Crosspolymer-6
Emulsion StabilisingEthylhexylglycerin
Skin ConditioningAdenosine
Skin Conditioning
Glycerin
Humectant
Xanthan Gum
EmulsifyingTocopherol
Antioxidant
Centella Asiatica Extract
Cleansing
Centella Asiatica Leaf Extract
Skin Conditioning
Saccharomyces Ferment
Skin Conditioning
Centella Asiatica Root Extract
Skin Conditioning
Houttuynia Cordata Extract
Skin Conditioning
Asiaticoside
Antioxidant
Madecassoside
Antioxidant
Sodium DNA
Skin Conditioning
Madecassic Acid
Skin Conditioning
Asiatic Acid
Skin Conditioning
Water, Propanediol, Camellia Sinensis Leaf Water, Dibutyl Adipate, Ethylhexyl Triazone, Polymethylsilsesquioxane, Diisopropyl Sebacate, Butyloctyl Salicylate, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Niacinamide, Drometrizole Trisiloxane, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Caprylyl Methicone, Butylene Glycol, 1,2-Hexanediol, Pentylene Glycol, Behenyl Alcohol, Polyglyceryl-3 Methylglucose Distearate, Polyglyceryl-6 Distearate, Decyl Glucoside, Tromethamine, Candelilla/Jojoba/Rice Bran Polyglyceryl-3 Esters, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Polyacrylate Crosspolymer-6, Ethylhexylglycerin, Adenosine, Glycerin, Xanthan Gum, Tocopherol, Centella Asiatica Extract, Centella Asiatica Leaf Extract, Saccharomyces Ferment, Centella Asiatica Root Extract, Houttuynia Cordata Extract, Asiaticoside, Madecassoside, Sodium DNA, Madecassic Acid, Asiatic Acid
Butyl Methoxydibenzoylmethane 3%
UV Absorber
Homosalate 7%
Skin Conditioning
Ethylhexyl Salicylate 5%
UV Absorber
Octocrylene 7%
UV Absorber
Water
Skin ConditioningGlycerin
Humectant
C15-19 Alkane
SolventPropanediol
Solvent
C12-22 Alkyl Acrylate/Hydroxyethylacrylate Copolymer
StabilisingTocopherol
Antioxidant
Sodium Stearoyl Glutamate
CleansingButylene Glycol
Humectant
Cetearyl Alcohol
Emollient
Sclerotium Gum
Emulsion StabilisingHydroxyacetophenone
Antioxidant
Caprylyl Glycol
Emollient
Sodium Starch Octenylsuccinate
AbsorbentGlyceryl Stearate
Emollient
Jojoba Esters
Emollient
Helianthus Annuus Seed Wax
Skin Conditioning
Hydroxypropyl Starch Phosphate
Trisodium Ethylenediamine Disuccinate
ChelatingCarbomer
Emulsion StabilisingSodium Lactate
Buffering
Sodium Hydroxide
BufferingPolysorbate 20
Emulsifying
Polyglycerin-3
Humectant
Palmitoyl Tripeptide-1
Skin Conditioning
Palmitoyl Tetrapeptide-7
Skin Conditioning
Butyl Methoxydibenzoylmethane 3%, Homosalate 7%, Ethylhexyl Salicylate 5%, Octocrylene 7%, Water, Glycerin, C15-19 Alkane, Propanediol, C12-22 Alkyl Acrylate/Hydroxyethylacrylate Copolymer, Tocopherol, Sodium Stearoyl Glutamate, Butylene Glycol, Cetearyl Alcohol, Sclerotium Gum, Hydroxyacetophenone, Caprylyl Glycol, Sodium Starch Octenylsuccinate, Glyceryl Stearate, Jojoba Esters, Helianthus Annuus Seed Wax, Hydroxypropyl Starch Phosphate, Trisodium Ethylenediamine Disuccinate, Carbomer, Sodium Lactate, Sodium Hydroxide, Polysorbate 20, Polyglycerin-3, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Butylene 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 GlycolCarbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture.
Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%.
It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier.
Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%.
A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions.
Learn more about CarbomerGlycerin (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.
Learn more about GlycerinPropanediol 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.
Learn more about PropanediolSodium Stearoyl Glutamate is an amino-acid based emulsifier. It is made by combining stearic acid with L-glutamic acid and neutralizing it to a sodium salt.
As an emulsifier, it works mainly as an oil-in-water one and helps keep the oil and water in your formulas blended. It also contributes to a smooth, non-greasy skin feel.
This ingredient is biodegradable and commonly available in natural/COSMOS-certified grades.
Learn more about Sodium Stearoyl GlutamateTocopherol is a fat-soluble antioxidant known as Vitamin E.
You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.
Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.
It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.
This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.
This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.
In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.
Concentrations usually range from 0.1-1% in most leave-on products.
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. Remember to stay hydrated!
Learn more about Water
