Eucerin Hyaluron-Filler Vitamin C Booster Versus Vichy Liftactiv Peptide-C Ampoule Serum

Eucerin Hyaluron-Filler Vitamin C Booster Versus Vichy Liftactiv Peptide-C Ampoule Serum

This brightening serum is formulated around Ascorbic Acid and Sodium Hyaluronate to brighten dull-looking skin and soften the look of wrinkles.

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

No concerns

Ingredients Side-by-side

Water

Ascorbic Acid

Glycerin

Squalane

Isopropyl Palmitate

Dibutyl Adipate

Glyceryl Stearate

Distarch Phosphate

Methylpropanediol

Sodium Hyaluronate

Glycyrrhiza Inflata Root Extract

PEG-40 Stearate

Sorbitan Stearate

Sodium Cetearyl Sulfate

Dimethicone

Acrylic Acid/Vp Crosspolymer

Xanthan Gum

Trisodium EDTA

1,2-Hexanediol

Piroctone Olamine

Phenoxyethanol

BHT

Parfum

Water, Ascorbic Acid, Glycerin, Squalane, Isopropyl Palmitate, Dibutyl Adipate, Glyceryl Stearate, Distarch Phosphate, Methylpropanediol, Sodium Hyaluronate, Glycyrrhiza Inflata Root Extract, PEG-40 Stearate, Sorbitan Stearate, Sodium Cetearyl Sulfate, Dimethicone, Acrylic Acid/Vp Crosspolymer, Xanthan Gum, Trisodium EDTA, 1,2-Hexanediol, Piroctone Olamine, Phenoxyethanol, BHT, Parfum

Butylene Glycol

Dipropylene Glycol

Hydrolyzed Rice Protein

Hydrolyzed Hyaluronic Acid

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.

Ascorbic Acid is is pure Vitamin C and is the biologically active form used directly by skin.

Not only is vitamin C great for your overall health and immune system, but it also has plenty of benefits for your skin. It is best supported by academic literature for:

Topical vitamin C has been shown to help neutralize oxidative stress from UV and pollution, helping to improve photoaging and hyperpigmentation when used consistently.

One clinical study found that using 5% topical vitamin C for six months improved signs of photodamaged skin, both on the surface and in the deeper structural layers of the skin.

While vitamin C doesn’t replace sunscreen, studies show it can boost photoprotection when combined with Vitamin E and ferulic acid. These two ingredients help improve stability and protective effects.

The big downside of this ingredient is formulation difficulty. Vitamin C is prone to oxidation and doesn't penetrate the skin unless formulated correctly. Research found that vitamin C absorbs into the skin best at a low pH (< 3.5) with about 20% being the upper limit for effective absorption.

Skin levels can saturate after repeated application; this means your skin won’t keep absorbing more once it’s full of vitamin C. This is why more isn’t always better with vitamin C and why very high concentrations don’t necessarily give extra benefits.

Ascorbic acid generally works well with many skincare ingredients but can be irritating when combined with other active ingredients. Strong oxidizing acne treatments like benzoyl peroxide can reduce the effectiveness of vitamin C if they are used at the same time; they are often recommended for use at different times of day.

Read more about other types of Vitamin C:

Foods rich with vitamin C include oranges, strawberries, broccoli, bell peppers, and more. When consuming Vitamin C, your skin receives a portion of the nutrients.

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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