Skin science article
Drunk Elephant B-Hydra Intensive Hydration Serum Versus Naturium Quadruple Hyaluronic Acid Serum 5%
Drunk Elephant B-Hydra Intensive Hydration Serum Versus Naturium Quadruple Hyaluronic Acid Serum 5% This hydrating serum is formulated around Sclerocarya Birrea Seed Oil and Panthenol to hydrate skin and strengthen the skin barrier. This hydrating serum is for
Drunk Elephant B-Hydra Intensive Hydration Serum Versus Naturium Quadruple Hyaluronic Acid Serum 5%
This hydrating serum is formulated around Sclerocarya Birrea Seed Oil and Panthenol to hydrate skin and strengthen the skin barrier.
This hydrating serum is formulated around Hydrolyzed Hyaluronic Acid and Sodium Hyaluronate to hydrate skin and strengthen the skin barrier.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Coconut Alkanes
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Glycerin
Pentylene Glycol
Sclerocarya Birrea Seed Oil
Wheat Amino Acids
Ananas Sativus Fruit Extract
Berberis Vulgaris Root Extract
Citrullus Lanatus Fruit Extract
Lens Esculenta Fruit Extract
Pyrus Malus Fruit Extract
Coco-Caprylate/Caprate
Panthenol
Sodium PCA
Sodium Hyaluronate Crosspolymer
Dipotassium Glycyrrhizate
Niacinamide
Cyclodextrin
Sodium Hyaluronate
Sodium Lactate
Phenoxyethanol
Hydroxyproline
Trisodium Ethylenediamine Disuccinate
Citric Acid
Caprylyl Glycol
Chlorphenesin
Ethylhexylglycerin
Water, Coconut Alkanes, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Glycerin, Pentylene Glycol, Sclerocarya Birrea Seed Oil, Wheat Amino Acids, Ananas Sativus Fruit Extract, Berberis Vulgaris Root Extract, Citrullus Lanatus Fruit Extract, Lens Esculenta Fruit Extract, Pyrus Malus Fruit Extract, Coco-Caprylate/Caprate, Panthenol, Sodium PCA, Sodium Hyaluronate Crosspolymer, Dipotassium Glycyrrhizate, Niacinamide, Cyclodextrin, Sodium Hyaluronate, Sodium Lactate, Phenoxyethanol, Hydroxyproline, Trisodium Ethylenediamine Disuccinate, Citric Acid, Caprylyl Glycol, Chlorphenesin, Ethylhexylglycerin
Propanediol
Hydrolyzed Hyaluronic Acid
Apricot Kernel Oil Polyglyceryl-6 Esters
Polyglyceryl-6 Oleate
Polyglyceryl-10 Oleate
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Magnolol
Kaempferol
Tetrahexyldecyl Ascorbate
Glycolipids
Glycine Soja Sterols
Tocopheryl Acetate
Sorbitan Palmate
Potassium Sorbate
Sodium Hydroxide
Glyceryl Polyacrylate
Xanthan Gum
Hexylene Glycol
Water, Glycerin, Propanediol, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Apricot Kernel Oil Polyglyceryl-6 Esters, Polyglyceryl-6 Oleate, Caprylyl Glycol, Polyglyceryl-10 Oleate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Magnolol, Kaempferol, Tetrahexyldecyl Ascorbate, Glycolipids, Glycine Soja Sterols, Tocopheryl Acetate, Phenoxyethanol, Sorbitan Palmate, Potassium Sorbate, Sodium Hydroxide, Glyceryl Polyacrylate, Xanthan Gum, Hexylene Glycol
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.
Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
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.
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!