Grace & Stella Hyaluronic Acid Serum Versus Neutrogena Hydro Boost Hydrating Serum

Grace & Stella Hyaluronic Acid Serum Versus Neutrogena Hydro Boost Hydrating Serum

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

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

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Sodium Hyaluronate

Sodium Hyaluronate Crosspolymer

Panthenol

Ahnfeltia Concinna Extract

Glycerin

Pentylene Glycol

Propanediol

Polyacrylate Crosspolymer-6

Phenoxyethanol

Caprylyl Glycol

Hexylene Glycol

PPG-26-Buteth-26

PEG-40 Hydrogenated Castor Oil

Trisodium Ethylenediamine Disuccinate

Citric Acid

Ethoxydiglycol

Ethylhexylglycerin

Chlorphenesin

Hyaluronic Acid

Potassium Sorbate

Water, Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Panthenol, Ahnfeltia Concinna Extract, Glycerin, Pentylene Glycol, Propanediol, Polyacrylate Crosspolymer-6, Phenoxyethanol, Caprylyl Glycol, Hexylene Glycol, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Trisodium Ethylenediamine Disuccinate, Citric Acid, Ethoxydiglycol, Ethylhexylglycerin, Chlorphenesin, Hyaluronic Acid, Potassium Sorbate

Dimethicone

Butylene Glycol

Neopentyl Glycol Diheptanoate

Aluminum Starch Octenylsuccinate

Isododecane

Dimethiconol

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Benzyl Alcohol

Sodium Lactate

Cetearyl Olivate

Bisabolol

Sorbitan Olivate

Sodium PCA

Parfum

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Sorbitol

Chondrus Crispus Extract

Sodium Hydroxide

Proline

Portulaca Oleracea Extract

Propylene Glycol

Magnesium Aspartate

Zinc Gluconate

Copper Gluconate

Water, Glycerin, Dimethicone, Butylene Glycol, Neopentyl Glycol Diheptanoate, Aluminum Starch Octenylsuccinate, Isododecane, Dimethiconol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Ethylhexylglycerin, Benzyl Alcohol, Sodium Lactate, Cetearyl Olivate, Bisabolol, Chlorphenesin, Sorbitan Olivate, Sodium PCA, Parfum, Sodium Hyaluronate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sorbitol, Chondrus Crispus Extract, Sodium Hydroxide, Proline, Portulaca Oleracea Extract, Propylene Glycol, Citric Acid, Magnesium Aspartate, Zinc Gluconate, Copper Gluconate

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.

Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.

Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.

However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.

Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.

In skincare formulas, citric acid can:

While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.

Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.

Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.

However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

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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