Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

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 Detailed comparison of Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum versus Paula's Choice Resist Youth-Extending Daily Hydrat

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