Dot & Key Skincare Watermelon Cooling Sunscreen SPF 50+ Versus Beauty of Joseon Daily Relief Sunscreen SPF 40

Dot & Key Skincare Watermelon Cooling Sunscreen SPF 50+ Versus Beauty of Joseon Daily Relief Sunscreen SPF 40

This hybrid 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

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Diethylamino Hydroxybenzoyl Hexyl Benzoate

Butylene Glycol

Ethylhexyl Triazone

C12-15 Alkyl Benzoate

Dibutyl Adipate

Propylene Glycol Dicaprylate/Dicaprate

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine

Lecithin

Polyglyceryl-3 Polyricinoleate

Phenoxyethanol

Ethylhexylglycerin

Trisodium Ethylenediamine Disuccinate

Dimethicone

Glycerin

Methylpropanediol

Titanium Dioxide

Silica

Methylene Bis-Benzotriazolyl Tetramethylbutylphenol

Decyl Glucoside

Propylene Glycol

Xanthan Gum

Terephthalylidene Dicamphor Sulfonic Acid

Citrullus Lanatus Fruit Extract

Sodium Hyaluronate

Aloe Barbadensis Leaf Juice

Oxothiazolidine

Sodium Benzoate

Tocopheryl Acetate

Caprylic/Capric Triglyceride

Hydrogenated Polyisobutene

Sodium Lactate

Menthyl Lactate

Butyloctyl Salicylate

Zea Mays Starch

Sorbitan Stearate

Sucrose Cocoate

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

C14-22 Alcohols

C12-20 Alkyl Glucoside

Sodium Hydroxide

Sodium Gluconate

Disodium EDTA

Water, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Butylene Glycol, Ethylhexyl Triazone, C12-15 Alkyl Benzoate, Dibutyl Adipate, Propylene Glycol Dicaprylate/Dicaprate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Lecithin, Polyglyceryl-3 Polyricinoleate, Phenoxyethanol, Ethylhexylglycerin, Trisodium Ethylenediamine Disuccinate, Dimethicone, Glycerin, Methylpropanediol, Titanium Dioxide, Silica, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Decyl Glucoside, Propylene Glycol, Xanthan Gum, Terephthalylidene Dicamphor Sulfonic Acid, Citrullus Lanatus Fruit Extract, Sodium Hyaluronate, Aloe Barbadensis Leaf Juice, Oxothiazolidine, Sodium Benzoate, Tocopheryl Acetate, Caprylic/Capric Triglyceride, Hydrogenated Polyisobutene, Sodium Lactate, Menthyl Lactate, Butyloctyl Salicylate, Zea Mays Starch, Sorbitan Stearate, Sucrose Cocoate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, C14-22 Alcohols, C12-20 Alkyl Glucoside, Sodium Hydroxide, Sodium Gluconate, Disodium EDTA

Homosalate

Octocrylene

Ethylhexyl Salicylate

Dipropylene Glycol

Diethylhexyl 2,6-Naphthalate

Polymethylsilsesquioxane

Butyl Methoxydibenzoylmethane

Caprylyl Methicone

1,2-Hexanediol

Vp/Eicosene Copolymer

Pentylene Glycol

Behenyl Alcohol

Poly C10-30 Alkyl Acrylate

Polyglyceryl-3 Methylglucose Distearate

Cetearyl Alcohol

Glyceryl Stearate

Inulin Lauryl Carbamate

Tromethamine

Carbomer

Sodium Stearoyl Glutamate

Polyacrylate Crosspolymer-6

Oryza Sativa Extract

T-Butyl Alcohol

Tocopherol

Water, Homosalate, Butyloctyl Salicylate, Octocrylene, Ethylhexyl Salicylate, Dipropylene Glycol, Diethylhexyl 2,6-Naphthalate, Polymethylsilsesquioxane, Butyl Methoxydibenzoylmethane, Glycerin, Caprylyl Methicone, 1,2-Hexanediol, Silica, Vp/Eicosene Copolymer, Pentylene Glycol, Behenyl Alcohol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Cetearyl Alcohol, Glyceryl Stearate, Inulin Lauryl Carbamate, Tromethamine, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Ethylhexylglycerin, Polyacrylate Crosspolymer-6, Oryza Sativa Extract, T-Butyl Alcohol, Tocopherol

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Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken, emulsify, and improve the texture of products.

As an emulsifier, it helps stabilize oil-in-water emulsions to give products an elegant feel when applied.

It can also form a thin protective film on skin. One study found that a formula using this polymer helped slow down how quickly other ingredients (like DEET) were absorbed through skin.

A 2024 study of over 1,300 patients confirmed that sensitization to this ingredient is rare. It is also non-mutagenic and has a clean track record.

Butyloctyl Salicylate is a chemical UV filter structurally similar to octisalate. It is a photostabilizer, SPF booster, emollient and solvent. This ingredient helps evenly spread out ingredients.

According to a manufacturer, it is suitable for pairing with micro Titanium Dioxide, Zinc Oxide, and pigments.

Photostabilizers help stabilize UV-filters and prevents them from degrading quickly.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

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.

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.

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!

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