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Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum Versus Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50

Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum Versus Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50 This calming serum is formulated around Azelaic Acid and Panthenol to calm redness and clear breakouts. This hybrid sunscreen covers

Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum Versus Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50

This calming serum is formulated around Azelaic Acid and Panthenol to calm redness and clear breakouts.

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

Water

Azelaic Acid

Propylene Glycol

Sodium Hydroxide

Dipropylene Glycol

1,2-Hexanediol

Panthenol

Hydroxyethylcellulose

Betaine Salicylate

Glycerin

Biosaccharide Gum-1

Ethylhexylglycerin

Allantoin

Dipotassium Glycyrrhizate

Melia Azadirachta Leaf Extract

Camellia Sinensis Leaf Water

Sodium Hyaluronate

Melia Azadirachta Flower Extract

Niacinamide

Aloe Barbadensis Leaf Juice

Beta-Glucan

Centella Asiatica Extract

Centella Asiatica Leaf Extract

Centella Asiatica Root Extract

Madecassoside

Asiaticoside

Asiatic Acid

Madecassic Acid

Squalane

Zinc PCA

Butylene Glycol

Pentylene Glycol

Caprylyl/Capryl Glucoside

Hydrogenated Lecithin

Ceramide NP

Water, Azelaic Acid, Propylene Glycol, Sodium Hydroxide, Dipropylene Glycol, 1,2-Hexanediol, Panthenol, Hydroxyethylcellulose, Betaine Salicylate, Glycerin, Biosaccharide Gum-1, Ethylhexylglycerin, Allantoin, Dipotassium Glycyrrhizate, Melia Azadirachta Leaf Extract, Camellia Sinensis Leaf Water, Sodium Hyaluronate, Melia Azadirachta Flower Extract, Niacinamide, Aloe Barbadensis Leaf Juice, Beta-Glucan, Centella Asiatica Extract, Centella Asiatica Leaf Extract, Centella Asiatica Root Extract, Madecassoside, Asiaticoside, Asiatic Acid, Madecassic Acid, Squalane, Zinc PCA, Butylene Glycol, Pentylene Glycol, Caprylyl/Capryl Glucoside, Hydrogenated Lecithin, Ceramide NP

Butyl Methoxydibenzoylmethane 2%

Ethylhexyl Methoxycinnamate 7.5%

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

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

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.

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.

Hydrogenated Lecithin is a more stable version of lecithin.

It's made by taking lecithin (a phospholipid commonly found in soybeans and egg yolks) and hydrogenating it. This just means the unsaturated fatty acids are turned into saturated ones so they don't go bad as easily.

This ingredient is an emollient, emulsifier, and penetration enhancer. As an emollient, it helps soften and hydrate skin by trapping moisture within. As an emulsifier, it prevents oil and water ingredients from separating.

Hydrogenated Lecithin can form tiny spherical structures made of phospholipid bilayers called liposomes. These liposomes are able to capture compounds inside their structure and deliver them through the skin barrier.

Because phospholipids are a natural component of our cell membranes, this ingredient is inherently compatible with skin.

A 2021 study found lecithin-based surfactants were less harsh and more tolerable comared to Sodium Lauryl Sulfate (SLS).

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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The reference edit

Ingredients, questions
& further reading.

Connected source records selected through this article’s public topic index.

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Formula cabinet

Ingredients & structured notes

Ingredient index

Ingredients Explained

  1. 01These ingredients are found in both products.
  2. 02Ingredients higher up in an ingredient list are typically present in a larger amount.
  3. 03Polyhydroxystearic Acid is a vegetable-derived soft wax made from castor oil. It's an emulsion stabilizer, thickener, and film former.
  4. 04You'll likely see it in sunscreens because it helps disperse pigments and UV-reflecting minerals like titanium dioxide and zinc oxide evenly.
  5. 05Depending on the concentration, it can drastically change the texture of a product from pasty solid (like lipstick) to sprayable liquid.
  6. 06The CIR Expert Panel for Cosmetic Ingredient Safety has concluded this ingredient to be safe in cosmetics. The highest reported use concentration is 14.2% in lipsticks.
  7. 07Water. 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.
  8. 08So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
  9. 09You'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!
  10. 10Zinc Oxide (ZO) is a mineral broad-spectrum UV filter and the broadest-spectrum filter recognized by the FDA. It covers everything from UVB through to long-wave UVA.
  11. 11On top of sun protection, it has skin protectant and skin-soothing properties too.
  12. 12Here's a myth worth busting: mineral filters are usually described as working by "reflecting" or "bouncing" UV off your skin.
  13. 13That's mostly not true: when researchers actually measured it, ZO and Titanium Dioxide reflect only about 4-5% of UV (less than SPF 2 worth of protection).
  14. 14The vast majority of the work (~95%) is done by absorption, similar to chemical UV filters. ZO is a semiconductor that absorbs UV photos through its energy band gap.
  15. 15So the old "physical blocker vs. chemical absorber" framing is really an oversimplification.
  16. 16Zinc Oxide is one of the most effective broad-spectrum UV filters out there. It protects across UVB, UVA2, and UVA1 with a flat, even absorption curve across the whole UVA-UVB range.
  17. 17That uniform UVA coverage is its standout feature; titanium dioxide skews more toward UVB as its particle size drops so ZO gives more consistent and extended UVA protection.
  18. 18It's also very photostable. As an inorganic oxide, ZO doesn't break down in sunlight the way some organic filters can, so it holds up over a day of wear.
  19. 19This ingredient is gentle and soothing, making it go-to for sunscreens aimed at sensitive skin, rosacea, or ecezma-prone skin, babies, and children.
  20. 20It's also unlikely to cause the "eye sting" that some sunscreen ingredients are known for, and regulatory agencies broadly consider it non-toxic and safe for topical use.
Source · skinsort.com
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Product index

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Comparison edit

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