Skin science article
Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50 Versus Skynbio Hydrashield Cream
Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50 Versus Skynbio Hydrashield Cream This hybrid sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50. This barrier-repair moisturizer is formulated around Urea and Sodium PCA to str
Paula's Choice Resist Youth-Extending Daily Hydrating Fluid SPF 50 Versus Skynbio Hydrashield Cream
This hybrid sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50.
This barrier-repair moisturizer is formulated around Urea and Sodium PCA to strengthen the skin barrier and hydrate skin.
What's inside
Key Ingredients
Benefits
Concerns
No concerns
Ingredients Side-by-side
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
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
Propanediol
Urea
Caprylic/Capric Triglyceride
Sodium PCA
Sodium Hyaluronate
Panthenol
Hydroxyethylcellulose
Hyaluronic Acid
Aloe Barbadensis Leaf Powder
Citric Acid
Allantoin
Porphyra Umbilicalis Extract
Chamomilla Recutita Extract
Usnea Barbata Extract
Cucumis Sativus Fruit Extract
Water, Propanediol, Urea, Caprylic/Capric Triglyceride, Sodium PCA, Sodium Benzoate, Potassium Sorbate, Sodium Hyaluronate, Panthenol, Hydroxyethylcellulose, Hyaluronic Acid, Aloe Barbadensis Leaf Powder, Citric Acid, Allantoin, Porphyra Umbilicalis Extract, Chamomilla Recutita Extract, Usnea Barbata Extract, Cucumis Sativus Fruit Extract
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.
Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
You'll often find this ingredient used with other preservatives.
Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.
Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.
Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.
It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.
Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.
We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.
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!