Updated on February 12, 2024
Overview
What they are
These products are both reef safe . They have a total of 4 ingredients in common
Suited For
They're both likely to be good for dry skin, brightening skin and better texture
Free From
They both do not contain any harsh alcohols, common allergens, parabens or sulfates
What's Inside
They both contain silicones
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Kiehl's Ultra Facial Overnight Hydrating Masque 21 ingredients
Paula's Choice Hydrating Treatment Mask 33 ingredients
At a glance
Click on any of the items below to learn more
Kiehl's Ultra Facial Overnight Hydrating Masque 21 ingredients
Paula's Choice Hydrating Treatment Mask 33 ingredients
Benefits
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Concerns
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Notable Ingredients
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Benefits
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Concerns
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Ingredients Side-by-side
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.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Squalane is an emollient that helps the skin hold onto moisture. It's an oily liquid that occurs naturally in certain types of fish and plant oils.
2 Concerns
Butyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.
Triethanolamine is an emulsifier and pH adjuster. It is created using ethylene oxide and ammonia. This gives Triethanolamine a nitrogen core and a similar scent to ammonia.
Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.
Urea is also called carbamide and is the diamide of carbonic acid. In cosmetics, urea is used to hydrate the skin. It also provides exfoliation in higher concentrations.
Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
Sodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
Aluminum Starch Octenylsuccinate is a synthetic powder used as an absorbent, thickener, and anti-caking agent.
Chlorphenesin is a synthetic preservative. It helps protect a product against bacteria in order to extend shelf life. In most cases, Chlorphenesin is paired with other preservatives such as phenoxyethanol and caprylyl glycol.
Pseudoalteromonas Ferment Extract isn't fungal acne safe.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Water, Glycerin, Propylene Glycol, Squalane, Butyrospermum Parkii Butter, Triethanolamine, Carbomer, Urea, Dimethicone, Hydroxyethylpiperazine Ethane Sulfonic Acid, Phenoxyethanol, Caprylyl Glycol, Imperata Cylindrica Root Extract, Ophiopogon Japonicus Root Extract, Sodium Citrate, Citric Acid, Aluminum Starch Octenylsuccinate, Chlorphenesin, Pseudoalteromonas Ferment Extract, Disodium EDTA, Acrylates Copolymer
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.
Propylene Glycol Dicaprylate/Dicaprate is a mixture of Propylene Glycol Dicaprylate and Propylene Glycol Dicaprate.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Sorbitan Stearate comes from sorbitol and stearic acid. Sorbitol is a type of sugar and stearic acid is a fatty acid.
Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
3 Concerns
Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Glyceryl Stearate is a mix of glycerin and stearic acid.
Dicaprylyl Carbonate comes from carbonic acid and caprylyl alcohol, a fatty alcohol. It is an emollient and gives skin a velvet feel. The sources of Dicaprylyl Carbonate may be synthetic or from animals.
Cyclopentasiloxane is a silicone used to improve texture and trap moisture. An easier name for this is D5.
Cyclohexasiloxane is a type of silicone more commonly known as D6. It is an emollient and solvent.
Glyceryl Behenate/Eicosadioate isn't fungal acne safe.
Helps reduce irritation Not safe for Fungal Acne
Borago Officinalis Seed Oil is from the seeds of the starflower plant. This plant grows primarily in Europe.
Helps reduce irritation Not safe for Fungal Acne
Oenothera Biennis Oil is the fixed oil derived from the seeds of the Evening Primrose.
Oil Not safe for Fungal Acne
Olea Europaea Fruit Oil is the fixed oil obtained from the ripe fruit of the Olive. In other words - olive oil.
Glycine Soja Sterols is derived from the soybean plant. Sterols are an organic compound and technically an alcohol.
Antioxidant Helps brighten skin
Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.
Antioxidant 4 Benefits May cause irritation
Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Antioxidant 5 Benefits
Tetrahexyldecyl Ascorbate is a form of Vitamin C.
Antioxidant 6 Benefits Not safe for Fungal Acne
Ascorbyl Palmitate is created by combining pure Vitamin C and palmitic acid. It is an antioxidant and helps reduce hyperpigmentation.
3 Concerns
Linoleic Acid is Vitamin F and a fatty acid. It is an emollient and helps thicken texture. Linoleic acid helps with hydrating skin and nourishing the skin's barrier. The top layer of skin, or epidermis, contains high amounts of linoleic acid naturally.
Phospholipids are naturally found in our skin as they are the main component of cell membranes. Phospholipids have humectant, emollient, antioxidant properties.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
7 Benefits 3 Concerns
Retinyl palmitate is a form of retinoid. Retinoids are the superstar class of anti-aging ingredients that include tretinoin and retinol.
Cetearyl Glucoside is a surfactant and emulsifier. It can be produced from synthetic of natural sources of cetearyl alcohol and glucose.
Sclerotium Gum is a polysaccharide gum made by the fungus, Sclerotium rolfssii. It is similar to xanthan gum.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
Water, Propylene Glycol Dicaprylate/Dicaprate, Butylene Glycol, Glycerin, Sorbitan Stearate, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Glyceryl Stearate, Dicaprylyl Carbonate, Ethyl Macadamiate, Cyclopentasiloxane, Cyclohexasiloxane, Glyceryl Behenate/Eicosadioate, Borago Officinalis Seed Oil, Oenothera Biennis Oil, Olea Europaea Fruit Oil, Prunus Armeniaca Fruit, Glycine Soja Sterols, Tocopheryl Acetate, Tocopherol, Tetrahexyldecyl Ascorbate, Ascorbyl Palmitate, Linoleic Acid, Phospholipids, Sodium Hyaluronate, Retinyl Palmitate, Sodium Dilauramidoglutamide Lysine, Cetearyl Glucoside, Sclerotium Gum, Hectorite, Caprylyl Glycol, Ethylhexylglycerin, Phenoxyethanol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. Stay hydrated!
Learn more about WaterGlycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinPhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolIngredient Ratings
Here's what our community thinks of the ingredients in these two products.
When to use
Kiehl's Ultra Facial Overnight Hydrating Masque 21 ingredients
Paula's Choice Hydrating Treatment Mask 33 ingredients
Reviews
Here's what our community thinks
Kiehl's Ultra Facial Overnight Hydrating Masque 21 ingredients
Paula's Choice Hydrating Treatment Mask 33 ingredients
Rosy123
I have been using this mask for many years. I don’t necessarily use it as a mask, but as a moisturiser. It is rich and soothing and can absolutely...
I have been using this mask for many years. I don’t necessarily use it as a mask, but as a moisturiser. It is rich and soothing and can absolutely be left on overnight. I do my nightly routine (including tretinoin) and apply this mask as the last step over my moisturiser. It has been the missing step in my routine that has finally solved my extremely dry skin issues. It is a superb product for dry skin.
