Tatcha The Silk Sunscreen SPF 50 Weightless Mineral Sunscreen Versus Kate Somerville Hydrakate Illuminating SPF 50+ Drops
Updated on May 21, 2024
Overview
What they are
These products are both cruelty-free sunscreens. They have a total of 10 ingredients in common
Cool Features
They both contain SPF and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, parabens or sulfates
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
Tatcha The Silk Sunscreen SPF 50 Weightless Mineral Sunscreen 47 ingredients
Kate Somerville Hydrakate Illuminating SPF 50+ Drops 27 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Tatcha The Silk Sunscreen SPF 50 Weightless Mineral Sunscreen 47 ingredients
Kate Somerville Hydrakate Illuminating SPF 50+ Drops 27 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Zinc Oxide 10%
Cosmetic Colorant
Water
Skin ConditioningC12-15 Alkyl Benzoate
AntimicrobialCaprylic/Capric Triglyceride
MaskingLauryl PEG-8 Dimethicone
Dimethicone
Emollient
Isododecane
EmollientTridecyl Salicylate
Skin ConditioningHdi/Trimethylol Hexyllactone Crosspolymer
Propanediol
SolventCaprylyl Methicone
Skin Conditioning
Polymethylsilsesquioxane
Niacinamide
Smoothing
Saccharomyces/Rice Ferment Filtrate
Skin ConditioningSilica
Abrasive
Squalane
Emollient
Camellia Sinensis Leaf Extract
Antimicrobial
Cladosiphon Okamuranus Extract
Skin ConditioningHydrolyzed Silk
HumectantBisabolol
Masking
Allantoin
Skin Conditioning
Tocopherol
Antioxidant
Theobroma Cacao Seed Extract
Antioxidant
Arctium Lappa Root Extract
Skin ConditioningKappaphycus Alvarezii Extract
Skin ConditioningSodium Hyaluronate
Humectant
Lecithin
EmollientCaesalpinia Spinosa Fruit Extract
Skin ProtectingLactobacillus
Skin ConditioningMaltodextrin
AbsorbentCaprylyl Glycol
EmollientDimethicone Crosspolymer
Emulsion StabilisingHydrogenated Lecithin
EmulsifyingTetrasodium Glutamate Diacetate
PEG-10
HumectantPolyglyceryl-2 Dipolyhydroxystearate
Skin Conditioning
Propylene Glycol
Humectant
Lauryl PEG-10 Tris(Trimethylsiloxy)Silylethyl Dimethicone
Emulsifying
Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
Emulsifying
Butylene Glycol
Humectant
Phosphoric Acid
BufferingSodium Hydroxide
BufferingSodium Chloride
Masking
Hexylene Glycol
EmulsifyingEthylhexylglycerin
Skin ConditioningPhenoxyethanol
Preservative
Iron Oxides
Zinc Oxide 10%, Water, C12-15 Alkyl Benzoate, Caprylic/Capric Triglyceride, Lauryl PEG-8 Dimethicone, Dimethicone, Isododecane, Tridecyl Salicylate, Hdi/Trimethylol Hexyllactone Crosspolymer, Propanediol, Caprylyl Methicone, Polymethylsilsesquioxane, Niacinamide, Saccharomyces/Rice Ferment Filtrate, Silica, Squalane, Camellia Sinensis Leaf Extract, Cladosiphon Okamuranus Extract, Hydrolyzed Silk, Bisabolol, Allantoin, Tocopherol, Theobroma Cacao Seed Extract, Arctium Lappa Root Extract, Kappaphycus Alvarezii Extract, Sodium Hyaluronate, Lecithin, Caesalpinia Spinosa Fruit Extract, Lactobacillus, Maltodextrin, Caprylyl Glycol, Dimethicone Crosspolymer, Hydrogenated Lecithin, Tetrasodium Glutamate Diacetate, PEG-10, Polyglyceryl-2 Dipolyhydroxystearate, Propylene Glycol, Lauryl PEG-10 Tris(Trimethylsiloxy)Silylethyl Dimethicone, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, Butylene Glycol, Phosphoric Acid, Sodium Hydroxide, Sodium Chloride, Hexylene Glycol, Ethylhexylglycerin, Phenoxyethanol, Iron Oxides
Zinc Oxide 24.5%
Cosmetic Colorant
C13-15 Alkane
SolventWater
Skin ConditioningEthyl Macadamiate
Skin Conditioning
Caprylic/Capric Triglyceride
MaskingPolyhydroxystearic Acid
Emulsifying
Propanediol
SolventPolyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
Emulsifying
Polyglyceryl-3 Polyricinoleate
Emulsifying
Ectoin
Skin Conditioning
Hydroxyectoin
BufferingIsostearic Acid
Cleansing
Lecithin
EmollientTrisodium Ethylenediamine Disuccinate
Quaternium-90 Bentonite
Lavandula Angustifolia Oil
Masking
Citrus Aurantium Dulcis Peel Oil
Masking
Triethyl Citrate
Masking
Tocopherol
Antioxidant
Malic Acid
Buffering
Stearyl Triethoxysilane
Sodium Chloride
Masking
Ethylhexylglycerin
Skin ConditioningPhenoxyethanol
Preservative
CI 77491
Cosmetic ColorantCI 77492
Cosmetic ColorantCI 77499
Cosmetic ColorantZinc Oxide 24.5%, C13-15 Alkane, Water, Ethyl Macadamiate, Caprylic/Capric Triglyceride, Polyhydroxystearic Acid, Propanediol, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, Polyglyceryl-3 Polyricinoleate, Ectoin, Hydroxyectoin, Isostearic Acid, Lecithin, Trisodium Ethylenediamine Disuccinate, Quaternium-90 Bentonite, Lavandula Angustifolia Oil, Citrus Aurantium Dulcis Peel Oil, Triethyl Citrate, Tocopherol, Malic Acid, Stearyl Triethoxysilane, Sodium Chloride, Ethylhexylglycerin, Phenoxyethanol, CI 77491, CI 77492, CI 77499
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Zinc Oxide is a mineral broad-spectrum UV filter; it is the broadest UVA and UVB reflector approved by the FDA. While it is most commonly man-made for cosmetics, it can naturally occur in zincite, a rare mineral.
Today, traditional and nano-sized zinc oxide can be found in beauty products. Nano-sized zinc oxide can enhance a product's UV protection. While it is not believed to have a negative effect on skin, nano-zinc oxide may be harmful to coral reefs - though the verdict is not entirely out on this one.
Zinc Oxide also has antibacterial and calming properties. It is not water soluble.
Zinc has been used throughout history as an ingredient in paint and medicine. An Indian text from 500BC is believed to list zinc oxide as a salve for open wound. The Ancient Greek physician Dioscorides has also mentioned the use of zinc as an ointment in 1AD.
Learn more about Zinc OxideWater. 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 WaterThis ingredient is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
It helps thicken a product's formula and makes it easier to spread by dissolving clumping compounds.
Caprylic Triglyceride is made by combining glycerin with coconut oil, forming a clear liquid.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this.
Learn more about Caprylic/Capric TriglyceridePropanediol 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 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 TocopherolLecithin is a term for a group of substances found in the cell membranes of plants, animals, and humans. They are made up of mixture of phospholipids.
This ingredient has emollient and emulsifying properties.
As an emollient, lecithen helps soften the skin and creates a barrier to keep moisture in.
As an emulsifier, it also helps prevent water and oil ingredients from separating. Lecithin can also help ingredients be better absorbed by the skin.
This is because the phospholipids in lecithin produce liposomes. Liposomes help other ingredients get through the skin barrier.
Depending on the source of this ingredient, lecithin may not be fungal acne safe. This is because some sources of lecithin come from soybean oil, which may feed the malassezia yeast that feeds fungal acne.
We recommend reaching out to the brand you are purchasing from to inquire about the source of their lecithin.
Learn more about LecithinPolyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate isn't fungal acne safe.
Chances are, you eat sodium chloride every day. Sodium Chloride is also known as table salt.
This ingredient has many purposes in skincare: thickener, emulsifier, and exfoliator.
You'll most likely find this ingredient in cleansers where it is used to create a gel-like texture. As an emulsifier, it also prevents ingredients from separating.
There is much debate on whether this ingredient is comedogenic. The short answer - comedogenic ratings don't tell the whole story. Learn more about comegodenic ratings here.
The concensus about this ingredient causing acne seems to be divided. Research is needed to understand if this ingredient does cause acne.
Scrubs may use salt as the primary exfoliating ingredient.
Learn more about Sodium ChlorideEthylhexylglycerin (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.
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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Tatcha The Silk Sunscreen SPF 50 Weightless Mineral Sunscreen 47 ingredients
Kate Somerville Hydrakate Illuminating SPF 50+ Drops 27 ingredients
Reviews
Here's what our community thinks
Tatcha The Silk Sunscreen SPF 50 Weightless Mineral Sunscreen 47 ingredients
Currently the ONLY sunscreen that works for my super sensitive acne prone dry to combo skin. It applies like a dream, my skin literally drinks this up and leaves such natural glowy finish. Reapplies beautifully. Zero chalkiness or dryness which is so impressive for a mineral sunscreen! Just so elegant! The price is quite high, but then again I have spent much more trying to find a sunscreen that Show more
this is literally the best facial sunscreen i have ever used. it applies so smooth & leaves a gorgeous glow on the skin. i know the bottle is really small but it somehow lasts forever?? i just wish it wasn’t so damn expensive otherwise i have zero complaints.
