Skin science article
Paula's Choice Resist Anti-Aging Clear Skin Hydrator Versus Paula's Choice Water-Infusing Electrolyte Moisturizer
Paula's Choice Resist Anti-Aging Clear Skin Hydrator Versus Paula's Choice Water-Infusing Electrolyte Moisturizer This anti-aging moisturizer is formulated around Sodium Ascorbyl Phosphate and Niacinamide to soften the look of wrinkles and balance excess oil.
Paula's Choice Resist Anti-Aging Clear Skin Hydrator Versus Paula's Choice Water-Infusing Electrolyte Moisturizer
This anti-aging moisturizer is formulated around Sodium Ascorbyl Phosphate and Niacinamide to soften the look of wrinkles and balance excess oil.
This moisturizer is formulated around Potassium PCA and Magnesium PCA to hydrate skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Cyclopentasiloxane
Octyldodecyl Neopentanoate
Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
Glycerin
Sodium Ascorbyl Phosphate
Cetyl Alcohol
Niacinamide
Dimethicone
Cetearyl Alcohol
Butylene Glycol
Glyceryl Stearate
PEG-100 Stearate
Adenosine
Epigallocatechin Gallate
Glucose Oxidase
Lactoperoxidase
Boerhavia Diffusa Root Extract
Cocos Nucifera Fruit Extract
Lactobacillus
Polysilicone-11
Sodium Chloride
Potassium Thiocyanate
Glucose
Xanthan Gum
Ceteareth-20
Decyl Glucoside
Citric Acid
Phenoxyethanol
Water, Cyclopentasiloxane, Octyldodecyl Neopentanoate, Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer, Glycerin, Sodium Ascorbyl Phosphate, Cetyl Alcohol, Niacinamide, Dimethicone, Cetearyl Alcohol, Butylene Glycol, Glyceryl Stearate, PEG-100 Stearate, Adenosine, Epigallocatechin Gallate, Glucose Oxidase, Lactoperoxidase, Boerhavia Diffusa Root Extract, Cocos Nucifera Fruit Extract, Lactobacillus, Polysilicone-11, Sodium Chloride, Potassium Thiocyanate, Glucose, Xanthan Gum, Ceteareth-20, Decyl Glucoside, Citric Acid, Phenoxyethanol
Propanediol
Stearic Acid
Isohexadecane
Potassium PCA
Magnesium PCA
Calcium PCA
Ethylhexyl Olivate
Polyglyceryl-4 Olivate
Pyrus Malus Fruit Extract
Laminaria Saccharina Extract
Actinidia Chinensis Fruit Extract
Coffea Arabica Seed Extract
Biotin/Folic Acid/Cyanocobalamin/Niacinamide/Pantothenic Acid/Pyridoxine/Riboflavin/Thiamine/Yeast Polypeptides
Garcinia Mangostana Peel Extract
Prunus Serotina Fruit Extract
Squalane
Ceramide EOP
Ceramide AP
Ceramide NP
Pisum Sativum Extract
Phytosphingosine
Cholesterol
Acetyl Hexapeptide-37
Oryza Sativa Bran Extract
Tocopherol
Creatine
Bisabolol
Sorbitol
Inositol
Xylitol
Caprylic/Capric Triglyceride
Sodium Levulinate
Behenyl Behenate
Tribehenin
Sodium Lauroyl Lactylate
Sodium Acrylates Copolymer
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Carbomer
Sodium Hydroxide
Tetrasodium EDTA
Ethylhexylglycerin
Water, Glycerin, Dimethicone, Butylene Glycol, Propanediol, Stearic Acid, Glyceryl Stearate, Isohexadecane, Potassium PCA, Magnesium PCA, Calcium PCA, Ethylhexyl Olivate, Polyglyceryl-4 Olivate, Pyrus Malus Fruit Extract, Laminaria Saccharina Extract, Actinidia Chinensis Fruit Extract, Coffea Arabica Seed Extract, Biotin/Folic Acid/Cyanocobalamin/Niacinamide/Pantothenic Acid/Pyridoxine/Riboflavin/Thiamine/Yeast Polypeptides, Garcinia Mangostana Peel Extract, Prunus Serotina Fruit Extract, Squalane, Ceramide EOP, Ceramide AP, Ceramide NP, Pisum Sativum Extract, Phytosphingosine, Cholesterol, Acetyl Hexapeptide-37, Oryza Sativa Bran Extract, Tocopherol, Creatine, Bisabolol, Sorbitol, Inositol, Xylitol, Caprylic/Capric Triglyceride, Sodium Levulinate, Behenyl Behenate, Tribehenin, Sodium Lauroyl Lactylate, Xanthan Gum, Sodium Acrylates Copolymer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Sodium Hydroxide, Tetrasodium EDTA, Phenoxyethanol, Ethylhexylglycerin
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Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
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.
Glyceryl Stearate is made by reacting glycerin with stearic acid (typically sourced from plant oils like palm or coconut). It's an emulsifier, emollient, and mild occlusive.
Emulsifiers help ingredients like oil and water stay mixed so your formula stays nicely blended and uniform in texture.
This ingredient is typically used in concentrations between 1-10%. Studies have found it to be non-sensitizing, non-phototoxic, and non-photoallergenic.
A close cousin of this ingredient is Glyceryl Stearate SE ("self-emulsifying"). This just has a small amount of sodium or potassium stearate added so it can emulsify without a co-emulsifier.
Since this ingredient is an ester of a C18 fatty acid, it may not be fungal acne safe. The Malassezia yeast can potentially metabolize within the C11-C24 range.
Fun fact: The human body also creates Glyceryl Stearate naturally.
Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).
It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.
On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.
Another perk of this ingredient is that it stays functional across a wide pH range (3-10).
You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.
Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.
Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.
Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.
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.