La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid Versus Vichy Liftactiv Peptide-C Ampoule Serum

La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid Versus Vichy Liftactiv Peptide-C Ampoule Serum

This hydrating serum is formulated around Panthenol and Madecassoside to hydrate skin and strengthen the skin barrier.

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

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Alcohol Denat.

Propylene Glycol

Panthenol

Pentylene Glycol

Dimethicone

PEG-6 Caprylic/Capric Glycerides

PPG-6-Decyltetradeceth-30

Glyceryl Isostearate

Madecassoside

Sodium Hyaluronate

Ammonium Polyacryloyldimethyl Taurate

Disodium EDTA

Hydrolyzed Hyaluronic Acid

Caprylyl Glycol

Citric Acid

Xanthan Gum

Butylene Glycol

Tocopherol

Phenoxyethanol

Parfum

Water, Glycerin, Alcohol Denat., Propylene Glycol, Panthenol, Pentylene Glycol, Dimethicone, PEG-6 Caprylic/Capric Glycerides, PPG-6-Decyltetradeceth-30, Glyceryl Isostearate, Madecassoside, Sodium Hyaluronate, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Hydrolyzed Hyaluronic Acid, Caprylyl Glycol, Citric Acid, Xanthan Gum, Butylene Glycol, Tocopherol, Phenoxyethanol, Parfum

Ascorbic Acid

Dipropylene Glycol

Hydrolyzed Rice Protein

Hydrolyzed Lupine Protein

Ceramide AP

Water, Ascorbic Acid, Butylene Glycol, Dipropylene Glycol, Glycerin, Sodium Hyaluronate, Hydrolyzed Rice Protein, Hydrolyzed Hyaluronic Acid, Hydrolyzed Lupine Protein, Ceramide AP

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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.

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

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.

Hydrolyzed Hyaluronic Acid is hyaluronic acid (HA) that is broken down into lower molecular weight fragments.

It's a humectant that pulls and holds water in the skin to help with hydration, plumpness, and reduce transepidermal water loss.

Because hydrolyzed hyaluronic acid is smaller in size, it can slip past your outermost layer of skin more easily than full-sized HA.

Most formulations will combine all sizes to get the best of both worlds.

Typical usage levels range from 0.01-1%. Any percentage higher than 2% might become goopy and tacky.

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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