Skin science article
Beauty of Joseon Daily Relief Sunscreen SPF 40 Versus L'Oreal Revitalift Clinical Anti-UV fluid SPF 50
Beauty of Joseon Daily Relief Sunscreen SPF 40 Versus L'Oreal Revitalift Clinical Anti-UV fluid SPF 50 This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging. This oil-control day moisturizer is formulated around Silica
Beauty of Joseon Daily Relief Sunscreen SPF 40 Versus L'Oreal Revitalift Clinical Anti-UV fluid SPF 50
This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging.
This oil-control day moisturizer is formulated around Silica and Tocopherol to balance excess oil and brighten dull-looking skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
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
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
Alcohol Denat.
Diisopropyl Sebacate
Isopropyl Myristate
Ethylhexyl Triazone
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Propanediol
C12-22 Alkyl Acrylate/Hydroxyethylacrylate Copolymer
Drometrizole Trisiloxane
Perlite
Caprylic/Capric Triglyceride
Ascorbyl Glucoside
Hydroxyacetophenone
Hydroxyethylcellulose
Sodium Hyaluronate
Triethanolamine
Trisodium Ethylenediamine Disuccinate
Caprylyl Glycol
Terephthalylidene Dicamphor Sulfonic Acid
Parfum
Water, Alcohol Denat., Diisopropyl Sebacate, Silica, Isopropyl Myristate, Ethylhexyl Salicylate, Ethylhexyl Triazone, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Butyl Methoxydibenzoylmethane, Glycerin, Propanediol, C12-22 Alkyl Acrylate/Hydroxyethylacrylate Copolymer, Drometrizole Trisiloxane, Perlite, Caprylic/Capric Triglyceride, Tocopherol, Ascorbyl Glucoside, Hydroxyacetophenone, Hydroxyethylcellulose, Sodium Hyaluronate, Triethanolamine, Trisodium Ethylenediamine Disuccinate, Caprylyl Glycol, Terephthalylidene Dicamphor Sulfonic Acid, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Parfum
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.
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.
Also known as Avobenzone, this ingredient is an oil-soluble used to absorb the full spectrum of UVA rays (peak 357 nm).
It's one of the most effective UVA filters available but has a major caveat of photostability: avobenzone is susceptible to photodegradation.
This means it can lose efficacy when exposed to sunlight without the help of a stabilizing agent.
Studies show antioxidants (like vitamin E or vitamin C) and some UV filters (like octocrylene and Tinosorb S) can meaningfully improve its stability in a formulation.
The maximum allowable concentration according to regulation is 3% in the US + Canada, and 5% in the EU, Australia, China, Korea, and ASEAN countries.
It has a well-support safety profile: a comprehensive 2025 review found minimal toxicity with no evidence of carcinogenicity.
Overall, avobenzone is a safe and regulated ingredient used in sunscreen for over 40 years.
Ethylhexyl Salicylate (also called Octisalate or Octyl Salicylate) is an oil-soluble organic UV filter that's been used in sunscreen since the 1950's.
It absorbs UVB light in the 280-320 nm range with a peak absorbance around 306 nm.
You'll often see it paired with other UV filters to boost overall SPF because octisalate is a fairly week filter on its own.
The reason you'll see it so often is because it can help solubilize and stabilize the trickier filters like oxybenzone and avobenzone.
Unlike these filters, octisalate has pretty good photostability and doesn't create skin-damaging free radicals when exposed to sunlight.
The fatty-alcohol part of the molecule also gives it a light, emollient feel so it doubles as a nice texture enhancer.
Usage levels vary around the world:
Safety-wise, this ingredient has a pretty reassuring track record. The EU's Scientific Committee on Consumer Products (SCCP) found very low skin penetration in human skin tests and negative results for irritation, phototoxicity, and photoallergy.
The real-world allergy risk is pretty low too; a 2012 European study of 1,031 people recorded only 2 reactions to it (a rate of 0.19%).
You might have seen scary headlines about sunscreen getting into your blood.
In 2019, the FDA found that several chemical filters can absorb through the skin and show up in the bloodstream at small but measurable levels.
Here's the important part: these tiny levels are just a cutoff the FDA uses to decide which ingredients need more testing and doesn't mean anything harmful was found.
The researchers were clear that the results are no reason to stop wearing sunscreen.
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.
Tocopherol 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.
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!