Dear, Klairs Rich Moist Soothing Serum Versus Kiehl's Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum

Dear, Klairs Rich Moist Soothing Serum Versus Kiehl's Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum

This hydrating serum is formulated around Glycyrrhiza Glabra Root Extract and Centella Asiatica Extract to hydrate skin and calm redness.

This hydrating serum is formulated around Sodium Hyaluronate to hydrate skin and strengthen the skin barrier.

What's inside

Key Ingredients

Benefits

Concerns

No concerns

Ingredients Side-by-side

Water

Butylene Glycol

Dimethyl Sulfone

Betaine

Propanediol

Disodium EDTA

Glycyrrhiza Glabra Root Extract

Centella Asiatica Extract

Arginine

Carbomer

1,2-Hexanediol

Chlorphenesin

Tocopheryl Acetate

PEG-60 Hydrogenated Castor Oil

Paeonia Suffruticosa Root Extract

Illicium Verum Fruit Extract

Nelumbium Speciosum Flower Extract

Citrus Paradisi Fruit Extract

Scutellaria Baicalensis Root Extract

Glycerin

Sodium Hyaluronate

Panthenol

Luffa Cylindrica Fruit/Leaf/Stem Extract

Aloe Barbadensis Leaf Extract

Althaea Rosea Flower Extract

Portulaca Oleracea Extract

Polyquaternium-51

Apium Graveolens Extract

Brassica Rapa Leaf Extract

Oryza Sativa Bran Extract

Brassica Oleracea Capitata Leaf Extract

Daucus Carota Sativa Root Extract

Brassica Oleracea Italica Extract

Solanum Lycopersicum Fruit/Leaf/Stem Extract

Beta-Glucan

Lysine Hcl

Sodium Ascorbyl Phosphate

Acetyl Methionine

Theanine

Proline

Natto Gum

Water, Butylene Glycol, Dimethyl Sulfone, Betaine, Propanediol, Disodium EDTA, Glycyrrhiza Glabra Root Extract, Centella Asiatica Extract, Arginine, Carbomer, 1,2-Hexanediol, Chlorphenesin, Tocopheryl Acetate, PEG-60 Hydrogenated Castor Oil, Paeonia Suffruticosa Root Extract, Illicium Verum Fruit Extract, Nelumbium Speciosum Flower Extract, Citrus Paradisi Fruit Extract, Scutellaria Baicalensis Root Extract, Glycerin, Sodium Hyaluronate, Panthenol, Luffa Cylindrica Fruit/Leaf/Stem Extract, Aloe Barbadensis Leaf Extract, Althaea Rosea Flower Extract, Portulaca Oleracea Extract, Polyquaternium-51, Apium Graveolens Extract, Brassica Rapa Leaf Extract, Oryza Sativa Bran Extract, Brassica Oleracea Capitata Leaf Extract, Daucus Carota Sativa Root Extract, Brassica Oleracea Italica Extract, Solanum Lycopersicum Fruit/Leaf/Stem Extract, Beta-Glucan, Lysine Hcl, Sodium Ascorbyl Phosphate, Acetyl Methionine, Theanine, Proline, Natto Gum

Phenoxyethanol

Tetrasodium Glutamate Diacetate

Citric Acid

Water, Glycerin, Sodium Hyaluronate, Phenoxyethanol, Chlorphenesin, Tetrasodium Glutamate Diacetate, Citric Acid

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.

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.

Chlorphenesin is a biocide. This means it is able to help fight the microorganisms on our skin. It is also able to fight odor-releasing bacteria.

Chlorphenesin is soluble in both water and glycerin.

Studies show Chlorphenesin is easily absorbed by our skin. You should speak with a skincare professional if you have concerns about using Chlorphenesin.

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.

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!

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