Medik8 Advanced Day Ultimate Protect 50+ PA++++ Versus SkinCeuticals Advanced Brightening UV Defense SPF50 Sunscreen
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningBis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Skin Conditioning
Diethylamino Hydroxybenzoyl Hexyl Benzoate
UV Filter
Dibutyl Adipate
EmollientGlycerin
Humectant
C12-15 Alkyl Benzoate
AntimicrobialDiisopropyl Adipate
EmollientEthylhexyl Triazone
UV Absorber
Capryloyl Glycerin/Sebacic Acid Copolymer
Skin ConditioningIsododecane
EmollientVaccinium Myrtillus Seed Oil
Skin Conditioning
Acrylates/C12-22 Alkyl Methacrylate Copolymer
Silica
Abrasive
Glyceryl Stearate
Emollient
PEG-100 Stearate
Cetearyl Alcohol
Emollient
Potassium Cetyl Phosphate
EmulsifyingSqualane
Emollient
Phenoxyethanol
Preservative
Hydroxyacetophenone
Antioxidant
Inulin Lauryl Carbamate
Emulsion StabilisingMarrubium Vulgare Extract
Skin ConditioningArginine
Masking
Sodium Hyaluronate
Humectant
Lecithin
Emollient
Xanthan Gum
EmulsifyingCarnosine
Skin Conditioning
Disodium EDTA
Coco-Glucoside
Cleansing
Citric Acid
Buffering
Benzoic Acid
Masking
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingPlankton Extract
Skin ConditioningDehydroacetic Acid
Preservative
Parfum
Masking
Disodium Lauryl Sulfosuccinate
CleansingEthylhexylglycerin
Skin ConditioningSodium Hydroxide
BufferingLimonene
Perfuming
Linalool
Perfuming
Citral
Perfuming
Water, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Dibutyl Adipate, Glycerin, C12-15 Alkyl Benzoate, Diisopropyl Adipate, Ethylhexyl Triazone, Capryloyl Glycerin/Sebacic Acid Copolymer, Isododecane, Vaccinium Myrtillus Seed Oil, Acrylates/C12-22 Alkyl Methacrylate Copolymer, Silica, Glyceryl Stearate, PEG-100 Stearate, Cetearyl Alcohol, Potassium Cetyl Phosphate, Squalane, Phenoxyethanol, Hydroxyacetophenone, Inulin Lauryl Carbamate, Marrubium Vulgare Extract, Arginine, Sodium Hyaluronate, Lecithin, Xanthan Gum, Carnosine, Disodium EDTA, Coco-Glucoside, Citric Acid, Benzoic Acid, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Plankton Extract, Dehydroacetic Acid, Parfum, Disodium Lauryl Sulfosuccinate, Ethylhexylglycerin, Sodium Hydroxide, Limonene, Linalool, Citral
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
Ethylhexyl Triazone
UV Absorber
Drometrizole Trisiloxane
UV Absorber
Isononyl Isononanoate
EmollientIsopropyl Lauroyl Sarcosinate
Skin ConditioningButyl Methoxydibenzoylmethane
UV Absorber
Diisopropyl Sebacate
EmollientBis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Skin Conditioning
Niacinamide
Smoothing
Dimethicone
Emollient
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol
UV Filter
Octocrylene
UV Absorber
Propanediol
Solvent
Ethylhexyl Salicylate
UV Absorber
Cetearyl Alcohol
Emollient
Silica
Abrasive
Tranexamic Acid
Astringent
Tocopherol
Antioxidant
Phenoxyethanol
Preservative
PEG-10 Dimethicone
Skin Conditioning
CI 77891
Cosmetic ColorantPolyglyceryl-10 Laurate
Skin Conditioning
Sodium Stearoyl Glutamate
CleansingCaprylyl Glycol
Emollient
Butylene Glycol
Humectant
Cetearyl Glucoside
Emulsifying
Mica
Cosmetic ColorantGlycerin
Humectant
PEG-20
HumectantAmmonium Acryloyldimethyltaurate/Vp Copolymer
Trisodium Ethylenediamine Disuccinate
Carbomer
Emulsion StabilisingInulin Lauryl Carbamate
Emulsion StabilisingT-Butyl Alcohol
Perfuming
Water, Alcohol Denat., Ethylhexyl Triazone, Drometrizole Trisiloxane, Isononyl Isononanoate, Isopropyl Lauroyl Sarcosinate, Butyl Methoxydibenzoylmethane, Diisopropyl Sebacate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Niacinamide, Dimethicone, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Octocrylene, Propanediol, Ethylhexyl Salicylate, Cetearyl Alcohol, Silica, Tranexamic Acid, Tocopherol, Phenoxyethanol, PEG-10 Dimethicone, CI 77891, Polyglyceryl-10 Laurate, Sodium Stearoyl Glutamate, Caprylyl Glycol, Butylene Glycol, Cetearyl Glucoside, Mica, Glycerin, PEG-20, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Trisodium Ethylenediamine Disuccinate, Carbomer, Inulin Lauryl Carbamate, T-Butyl Alcohol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
You might know this ingredient as Tinosorb S or Bemotrizinol. It is a UV filter that covers both UVA and UVB rays.
This ingredient has two peak UV absorption peaks ( 310 and 340 nm) and is able to absorb both UV-A and UV-B rays. This ingredient works by preventing UV rays from reaching and damaging your skin.
On top of that - it is highly photostable and helps prevent the photodegration of other sunscreen ingredients such as avobenzone.
Tinosorb S is allowed in the EU, Australia, and Asia. It is close to being approved by the FDA and we'll hopefully get this ingredient in the U.S. by late 2026.
Fun fact: Tinosorb S is the most effective UV absorber at maximum concentration (measured by SPF) permitted in the EU.
This ingredient is oil-soluble, so your oil-cleansers will take this right off at night.
Learn more about Bis-Ethylhexyloxyphenol Methoxyphenyl TriazineCetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier.
Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient.
It plays several roles in a formula:
Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products.
Multiple assessments have found it to be non-irritating and non-sensitizing to most people.
However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers.
Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy.
Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans.
Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch test if you are unsure about certain ingredients.
This ingredient is not fungal acne safe. Cetearyl alcohol is a fatty alcohol with chain lengths that fall within the range that Malassezia can metabolize.
Learn more about Cetearyl AlcoholEthylhexyl Triazone is a modern chemical sunscreen that protects from UV-B radiation.
It is the most effective of existing UV-B filters, as it provides the highest level of photo-stable absorption. It protects from the entire UV-B range (280 to 320nm), with it's highest level of protection at 314nm.
Ethylhexyl Triazone is oil soluble, oderless and colorless, which mean it is able to be incorporated into a variety of different formulations.
It is not currently available within the United States due to slow changing FDA regulations. Outside of the US, it is used in formulations at concentrations up to 5%.
Learn more about Ethylhexyl TriazoneGlycerin (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 GlycerinWe don't have a description for Inulin Lauryl Carbamate yet.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Silica, also known as silicon dioxide, is a naturally occurring mineral. It is used as a fine, spherical, and porous powder in cosmetics.
Though it has exfoliant properties, the function of silica varies depending on the product.
The unique structure of silica enhances the spreadability and adds smoothness, making it a great texture enhancer.
It is also used as an active carrier, emulsifier, and mattifier due to its ability to absorb excess oil.
In some products, tiny microneedles called spicules are made from silica or hydrolyzed sponge. When you rub them in, they lightly polish away dead skin layers and enhance the penetration of active ingredients.
Learn more about SilicaWater. 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
