Skin science article
Neutrogena Hydro Boost Hyaluronic Acid Serum Versus TruSkin Multi-Vitamin Facial Serum
Neutrogena Hydro Boost Hyaluronic Acid Serum Versus TruSkin Multi-Vitamin Facial Serum This hydrating serum is formulated around Panthenol and Sodium Hyaluronate to hydrate skin and strengthen the skin barrier. This brightening serum is formulated around Linol
Neutrogena Hydro Boost Hyaluronic Acid Serum Versus TruSkin Multi-Vitamin Facial Serum
This hydrating serum is formulated around Panthenol and Sodium Hyaluronate to hydrate skin and strengthen the skin barrier.
This brightening serum is formulated around Linoleic Acid and Niacinamide to brighten dull-looking skin and strengthen the skin barrier.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Glycerin
Butylene Glycol
Panthenol
Pentylene Glycol
Phenoxyethanol
Chlorphenesin
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Trehalose
Xylitylglucoside
Sodium Hyaluronate
Anhydroxylitol
Disodium EDTA
Sodium Hydroxide
Yeast Extract
Xylitol
Hydrolyzed Hyaluronic Acid
Carrageenan
Agar
Potassium Chloride
Xanthan Gum
Ultramarines
Titanium Dioxide
Water, Glycerin, Butylene Glycol, Panthenol, Pentylene Glycol, Phenoxyethanol, Chlorphenesin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Trehalose, Xylitylglucoside, Sodium Hyaluronate, Anhydroxylitol, Disodium EDTA, Sodium Hydroxide, Yeast Extract, Xylitol, Hydrolyzed Hyaluronic Acid, Carrageenan, Agar, Potassium Chloride, Xanthan Gum, Ultramarines, Titanium Dioxide
Glyceryl Stearate
Aloe Barbadensis Leaf Juice
Sorbitan Olivate
Hexylene Glycol
Linoleic Acid
Linolenic Acid
Niacinamide
Sodium Ascorbyl Phosphate
Allantoin
Cholecalciferol
Jojoba Esters
Magnesium Stearate
Phytonadione
Zea Mays Oil
Calcium Pantothenate
Carbomer
Magnesium Chloride
Sodium Chloride
Calcium Chloride
Tocopheryl Acetate
Caprylyl Glycol
Ethylhexylglycerin
Tocopherol
Water, Glycerin, Glyceryl Stearate, Aloe Barbadensis Leaf Juice, Sorbitan Olivate, Hexylene Glycol, Linoleic Acid, Linolenic Acid, Niacinamide, Sodium Ascorbyl Phosphate, Allantoin, Sodium Hyaluronate, Cholecalciferol, Jojoba Esters, Magnesium Stearate, Phytonadione, Zea Mays Oil, Calcium Pantothenate, Carbomer, Magnesium Chloride, Potassium Chloride, Sodium Chloride, Calcium Chloride, Phenoxyethanol, Tocopheryl Acetate, Caprylyl Glycol, Ethylhexylglycerin, Tocopherol
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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.
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.
We don't have a description for Potassium Chloride yet.
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!