Skin science article
Paula's Choice Resist Advanced Replenishing Toner Versus Paula's Choice Skin Balancing Pore-Reducing Toner
Paula's Choice Resist Advanced Replenishing Toner Versus Paula's Choice Skin Balancing Pore-Reducing Toner This barrier-repair toner is formulated around Linoleic Acid and Phospholipids to strengthen the skin barrier and hydrate skin. This pore-care toner is f
Paula's Choice Resist Advanced Replenishing Toner Versus Paula's Choice Skin Balancing Pore-Reducing Toner
This barrier-repair toner is formulated around Linoleic Acid and Phospholipids to strengthen the skin barrier and hydrate skin.
This pore-care toner is formulated around Niacinamide and Panthenol to refine the look of pores and balance excess oil.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Cyclopentasiloxane
Glycerin
Glycereth-26
Polysorbate 20
Dimethiconol
Linoleic Acid
Oleic Acid
Linolenic Acid
Phospholipids
Carnosine
Epigallocatechin Gallate
Genistein
Sodium Hyaluronate
Sphingolipids
Ferulic Acid
Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein
Glycyrrhiza Glabra Root Extract
Acetyl Glucosamine
Quercetin
Oenothera Biennis Oil
Beta Vulgaris Root Extract
Cucurbita Pepo Seed Extract
Lecithin
Caprylic/Capric Triglyceride
Hydrolyzed Corn Starch
Hydrogenated Lecithin
Palmitic Acid
Butylene Glycol
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Xanthan Gum
Laureth-23
Laureth-4
Aminomethyl Propanol
Disodium EDTA
Sodium Benzoate
Ethylhexylglycerin
Phenoxyethanol
Chlorphenesin
Benzoic Acid
Sorbic Acid
Water, Cyclopentasiloxane, Glycerin, Glycereth-26, Polysorbate 20, Dimethiconol, Linoleic Acid, Oleic Acid, Linolenic Acid, Phospholipids, Carnosine, Epigallocatechin Gallate, Genistein, Sodium Hyaluronate, Sphingolipids, Ferulic Acid, Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein, Glycyrrhiza Glabra Root Extract, Acetyl Glucosamine, Quercetin, Oenothera Biennis Oil, Beta Vulgaris Root Extract, Cucurbita Pepo Seed Extract, Lecithin, Caprylic/Capric Triglyceride, Hydrolyzed Corn Starch, Hydrogenated Lecithin, Palmitic Acid, Butylene Glycol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xanthan Gum, Laureth-23, Laureth-4, Aminomethyl Propanol, Disodium EDTA, Sodium Benzoate, Ethylhexylglycerin, Phenoxyethanol, Chlorphenesin, Benzoic Acid, Sorbic Acid
Niacinamide
Adenosine
Anthemis Nobilis Flower Extract
Arctium Lappa Seed Oil
Hydrolyzed Jojoba Esters
Sodium PCA
Panthenol
Ceramide NP
Ceramide AP
Ceramide EOP
Phytosphingosine
Cholesterol
Tetrahexyldecyl Ascorbate
Oleth-10
Sodium Lauroyl Lactylate
Caprylyl Glycol
Hexylene Glycol
Sodium Citrate
Trisodium EDTA
Water, Glycerin, Butylene Glycol, Niacinamide, Polysorbate 20, Adenosine, Anthemis Nobilis Flower Extract, Arctium Lappa Seed Oil, Hydrolyzed Jojoba Esters, Sodium PCA, Panthenol, Sodium Hyaluronate, Ceramide NP, Ceramide AP, Ceramide EOP, Phytosphingosine, Cholesterol, Tetrahexyldecyl Ascorbate, Oleth-10, Sodium Lauroyl Lactylate, Caprylyl Glycol, Hexylene Glycol, Sodium Citrate, Xanthan Gum, Trisodium EDTA, 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.
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.
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.
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.
Polysorbate 20 is a gentle, water-soluble emulsifier and mild surfactant. It stops oil and water from separating to keep your formulas blended and stable.
It also acts as a mild penetration enhancer by helping active ingredients absorb slightly better.
The common safety discussion around this ingredient involves a manufacturing byproduct called 1,4-dioxane.
Trace amounts can form during production but the EU's Scientific Committee on Consumer Safety has concluded that levels at/below 10 ppm in finished products are safe (commercial products consistently fall within acceptable margins).
True allergic reactions are uncommon and the CIR Expert Panel has confirmed this ingredient to be safe as used in cosmetics.
Because it is derived from lauric acid, it may not be fungal acne safe.
Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.
In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.
Interestingly, the size of the molecule affects its behavior:
Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.
Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.
You'll typically see concentrations between 0.1-2% for this ingredient.
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.