Neogen Dermalogy Day-Light Protection Sun Screen SPF 50 PA+++ Versus Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50

Neogen Dermalogy Day-Light Protection Sun Screen SPF 50 PA+++ Versus Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50

This hybrid sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Titanium Dioxide 0.9%

Ethylhexyl Methoxycinnamate 7.5%

Zinc Oxide 2.8%

Water

Glycerin

Butylene Glycol

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine

C12-15 Alkyl Benzoate

Hexanediol

Isoamyl P-Methoxycinnamate

Dicaprylyl Carbonate

Cetearyl Alcohol

Xanthan Gum

Polysorbate 20

Sodium Hyaluronate

Glyceryl Stearate

PEG-100 Stearate

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Portulaca Oleracea Extract

Lavandula Angustifolia Oil

Phyllanthus Emblica Fruit Extract

Rubus Idaeus Fruit Extract

Vaccinium Angustifolium Fruit Extract

Euterpe Oleracea Fruit Extract

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Carbomer

Lippia Citriodora Leaf Extract

Rosa Damascena Flower Extract

Tocopheryl Acetate

Angelica Archangelica Root Extract

Beta-Glucan

Hibiscus Sabdariffa Flower Extract

Artemisia Absinthium Extract

Arnica Montana Flower Extract

Polyhydroxystearic Acid

Alumina

Gentiana Lutea Root Extract

Achillea Millefolium Extract

Litsea Cubeba Fruit Oil

Citrus Limon Fruit Oil

Eucalyptus Globulus Leaf Oil

Cedrus Atlantica Wood Oil

Disodium EDTA

Potassium Hydroxide

Citrus Aurantium Dulcis Oil

Aluminum Stearate

Titanium Dioxide 0.9%, Ethylhexyl Methoxycinnamate 7.5%, Zinc Oxide 2.8%, Water, Glycerin, Butylene Glycol, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, C12-15 Alkyl Benzoate, Hexanediol, Isoamyl P-Methoxycinnamate, Dicaprylyl Carbonate, Cetearyl Alcohol, Xanthan Gum, Polysorbate 20, Sodium Hyaluronate, Glyceryl Stearate, PEG-100 Stearate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Portulaca Oleracea Extract, Lavandula Angustifolia Oil, Phyllanthus Emblica Fruit Extract, Rubus Idaeus Fruit Extract, Vaccinium Angustifolium Fruit Extract, Euterpe Oleracea Fruit Extract, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Carbomer, Lippia Citriodora Leaf Extract, Rosa Damascena Flower Extract, Tocopheryl Acetate, Angelica Archangelica Root Extract, Beta-Glucan, Hibiscus Sabdariffa Flower Extract, Artemisia Absinthium Extract, Arnica Montana Flower Extract, Polyhydroxystearic Acid, Alumina, Gentiana Lutea Root Extract, Achillea Millefolium Extract, Litsea Cubeba Fruit Oil, Citrus Limon Fruit Oil, Eucalyptus Globulus Leaf Oil, Cedrus Atlantica Wood Oil, Disodium EDTA, Potassium Hydroxide, Citrus Aurantium Dulcis Oil, Aluminum Stearate

Butyl Methoxydibenzoylmethane 2%

Ethylhexyl Salicylate 5%

Octocrylene 2%

Silica

Dimethicone

Tocopherol

Chamomilla Recutita Flower Extract

Vitis Vinifera Seed Extract

Camellia Sinensis Leaf Extract

Camellia Oleifera Leaf Extract

Peucedanum Graveolens Extract

Sambucus Nigra Fruit Extract

Avena Sativa Bran Extract

Punica Granatum Extract

Lycium Barbarum Fruit Extract

Hydrogenated Lecithin

Titanium Dioxide

Dimethicone/Vinyl Dimethicone Crosspolymer

Diethylhexyl Syringylidenemalonate

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Sodium Carbomer

Benzyl Alcohol

Sodium Benzoate

Potassium Sorbate

Phenoxyethanol

Butyl Methoxydibenzoylmethane 2%, Ethylhexyl Methoxycinnamate 7.5%, Ethylhexyl Salicylate 5%, Octocrylene 2%, Water, Glycerin, Silica, Dimethicone, Tocopherol, Chamomilla Recutita Flower Extract, Vitis Vinifera Seed Extract, Camellia Sinensis Leaf Extract, Camellia Oleifera Leaf Extract, Peucedanum Graveolens Extract, Sambucus Nigra Fruit Extract, Avena Sativa Bran Extract, Punica Granatum Extract, Lycium Barbarum Fruit Extract, Hydrogenated Lecithin, Titanium Dioxide, Dimethicone/Vinyl Dimethicone Crosspolymer, Diethylhexyl Syringylidenemalonate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Xanthan Gum, Sodium Carbomer, Benzyl Alcohol, Sodium Benzoate, Potassium Sorbate, Phenoxyethanol

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.

This ingredient is also known as Octinoxate and is one of the oldest and most widely used chemical UV filters in skincare.

It has a simple job: soap up UVB radiation (290-320 nm), the wavelengths responsible for sunburn and a big chunk of long-term sun damage.

In formulas, it's always paired with a separate UVA filter because octinoxate solely protects skin from UVB.

Because it's an oil-soluble liquid, it's easy to blend into the oil phase of lotions/creams and gives a cosmetically elegant feel.

The one quirk about formulating this ingredient is photostability; the molecule slowly changes shape into a less effective version when sunlight hits it. So the longer you're in the sun, the weaker its protection gets. The drop can be more than 30% in some formulas.

It also doesn't play nice with Avobenzone (the common UVA filter) since avobenzone destabilizes octinoxate and the two degrade each other. But don't worry: brands have solved this issue by adding photostabilizers like Tinosorb S to prevent degradation and keep SPF stable under heavy UV exposure.

The maximum allowed level is 10% in the EU and Australia, 7.5% in the US and Canada, and 20% in Japan.

The Cosmetic Ingredient Review Panel has concluded this ingredient to be safe in cosmetics up to 10%.

One last thing worth knowing for context:

Octinoxate has been the subject of ongoing review in Europe where the Scientific Committee on Consumer Safety's (SCCS) 2025 final opinion is that this ingredient is an endocrine-active substance.

Lab and animal studies suggest it can act a bit like a hormone in the body (mildly mimicking estrogen and slightly blocking male hormones). It's important to know this hasn't really been shown to happen in everyday human use.

This ingredient is also banned in Hawaii over coral reef concerns.

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.

Titanium Dioxide (TD) is a mineral UV filter widely used in sunscreens and cosmetics.

It's one of only two UV filters officially classified as "mineral" by regulatory agencies (the other being Zinc Oxide).

A really common myth is that mineral filters work by reflecting UV light off your skin like tiny mirrors.

They don't only do that; modern research shows TD protects mostly by absorbing UV radiation, the same way chemical filters do.

When researchers measured this, reflection accounted for only about 4-5% of the protection (and less than SPF 2 on its own). The other ~95% comes from absorption: the UV photons hit the particle and their energy gets soaked up by its semiconductor band gap rather than bouncing off.

So "reflects vs. absorbs" was never really the right way to split mineral from chemical filters.

TD gives broad-spectrum protection that's strongest in the UVB and UVA-2 range and weaker in the UVA-1 range. Its UVA protection isn't quite as strong as Zinc Oxide's which is why you'll often see the two paired together.

Together, they make a solid broad-spectrum system.

TD is a great pick for sensitive, acne-prone, or redness-prone skin because it's non-irritating and chemically inert. Regulatory reviews classify it as a non-sensitizer and mild-to-non-irritant.

It's also unlikely to cause the "eye sting" some chemical filters are known for.

The main trade-off is cosmetic; TD can leave a white cast and has a thicker texture. This is why mineral sunscreens are often less cosmetically elegant than chemical or hybrid formulas (and harder to shade-match on deeper skin tones).

Formulators often use micronized or nano-sized TD to cut down on white case and improve spreadability. Smaller particles scatter less visible light so the formula looks less chalky while still filtering UV.

TD is almost always bundled with coatings like Alumina, Silica, Stearic Acid, or Dimethicone. These coatings do two important jobs:

TD can be used at up to 25% in a finished sunscreen; this is the regulatory ceiling in both the US and the EU.

In practice, the amount in any given product varies a lot depending on the target SPF and whether it's paired with other UV filters.

TD is one of the most heavily vetted sunscreen ingredients out there. It is approved as a UV filter in all major markets worldwide, including the US, EU, UK, Japan, Korea, China, Australia, and Canada.

The safety evidence is solid. There was an old worry that nano particles might absorb through skin into the body but multiple studies (including on damaged, sunburned, and UV-irradiated skin) have shown that TD stays on the surface and the layer of dead skin cells on top of everything else.

There's also no evidence of carcinogenicity, mutagenicity, or reproductive toxicity from dermal exposure of this ingredient.

For those who have seen the headline about a 2022 EU ban on TD, that was on TD as a food additive (a complete separate use from topical sunscreen).

There are ongoing questions about how nano-TD might affect marine ecosystems. As of now, there has been no conclusive evidence that any form of TD (or any other sunscreen filter) harms coral reefs or marine life.

The science is still developing and it's a space worth watching rather than packing over.

However, several destinations have reef-safety sunscreen rules that restrict certain chemical filters and steer visitors toward mineral, non-nano options. If you're traveling somewhere with these rules, a non-nano mineral sunscreen is the safe bet.

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!

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

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