Dr. Dennis Gross Skincare Vitamin C Lactic 15% Firm & Bright Serum Versus Hydropeptide Firma-Bright 20% Vitamin C Booster

Dr. Dennis Gross Skincare Vitamin C Lactic 15% Firm & Bright Serum Versus Hydropeptide Firma-Bright 20% Vitamin C Booster

This anti-aging serum is formulated around Ascorbic Acid and Lactic Acid to soften the look of wrinkles and brighten dull-looking skin.

This brightening serum is formulated around Sodium Ascorbyl Phosphate and Niacinamide to brighten dull-looking skin and soften the look of wrinkles.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Dipropylene Glycol

Ascorbic Acid

Dimethyl Isosorbide

Ricinoleth-40

Aminomethyl Propanol

Lactic Acid

Tocopherol

Glycyrrhiza Glabra Root Extract

Ferulic Acid

Morus Alba Fruit Extract

Sodium Hyaluronate

Glycolic Acid

Adenosine

Glycerin

Phenoxyethanol

Water, Dipropylene Glycol, Ascorbic Acid, Dimethyl Isosorbide, Ricinoleth-40, Aminomethyl Propanol, Lactic Acid, Tocopherol, Glycyrrhiza Glabra Root Extract, Ferulic Acid, Morus Alba Fruit Extract, Sodium Hyaluronate, Glycolic Acid, Adenosine, Glycerin, Phenoxyethanol

Sodium Ascorbyl Phosphate

Pentylene Glycol

Niacinamide

Propanediol

Carrageenan

Erythritol

Sodium PCA

Xanthan Gum

1,2-Hexanediol

Hydroxyacetophenone

Acetyl Hexapeptide-8

Caprylyl Glycol

Disodium Phosphate

Sodium Phosphate

Anogeissus Leiocarpus Bark Extract

Sodium Phytate

Hydrangea Arborescens Root Extract

Morus Alba Root Extract

Polysorbate 20

Resveratrol

Scutellaria Lateriflora Extract

Pentapeptide-21

Avena Sativa Kernel Extract

Water, Sodium Ascorbyl Phosphate, Pentylene Glycol, Glycerin, Niacinamide, Propanediol, Carrageenan, Erythritol, Sodium PCA, Xanthan Gum, 1,2-Hexanediol, Hydroxyacetophenone, Acetyl Hexapeptide-8, Caprylyl Glycol, Disodium Phosphate, Sodium Phosphate, Sodium Hyaluronate, Anogeissus Leiocarpus Bark Extract, Sodium Phytate, Hydrangea Arborescens Root Extract, Morus Alba Root Extract, Polysorbate 20, Resveratrol, Scutellaria Lateriflora Extract, Pentapeptide-21, Avena Sativa Kernel Extract

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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.

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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