L'Oreal Revitalift 10% Pure Glycolic Acid Serum Versus L'Oreal Revitalift 1.5% Pure Hyaluronic Acid Serum

L'Oreal Revitalift 10% Pure Glycolic Acid Serum Versus L'Oreal Revitalift 1.5% Pure Hyaluronic Acid Serum

This smoothing serum is formulated around Glycolic Acid and Ascorbyl Glucoside to refine skin texture and soften the look of wrinkles.

This hydrating serum is formulated around Sodium Hyaluronate and Dipeptide Diaminobutyroyl Benzylamide Diacetate to hydrate skin and soften the look of wrinkles.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycolic Acid

Glycerin

Alcohol Denat.

Sodium Hydroxide

Aloe Barbadensis Leaf Juice

Sodium Hyaluronate

Hydroxyethylcellulose

Ascorbyl Glucoside

Citric Acid

Potassium Sorbate

Sodium Benzoate

Water, Glycolic Acid, Glycerin, Alcohol Denat., Sodium Hydroxide, Aloe Barbadensis Leaf Juice, Sodium Hyaluronate, Hydroxyethylcellulose, Ascorbyl Glucoside, Citric Acid, Potassium Sorbate, Sodium Benzoate

Hydroxyethylpiperazine Ethane Sulfonic Acid

PEG-60

Hydrogenated Castor Oil

Secale Cereale Seed Extract

Calcium Pantothenate

Dipeptide Diaminobutyroyl Benzylamide Diacetate

Disodium EDTA

Pentylene Glycol

Phenoxyethanol

Chlorphenesin

Water, Glycerin, Hydroxyethylpiperazine Ethane Sulfonic Acid, Sodium Hyaluronate, PEG-60, Hydrogenated Castor Oil, Secale Cereale Seed Extract, Calcium Pantothenate, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Ascorbyl Glucoside, Disodium EDTA, Pentylene Glycol, Phenoxyethanol, Chlorphenesin

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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.

Ascorbyl Glucoside (AA-2G) is one of the most stable vitamin C derivatives out there.

It's made by attaching a glucose molecule to ascorbic acid; this glucose "cap" shields the vitamin C from air, light, heat, and metal ions that normally cause pure ascorbic acid to oxidize.

Once on your skin, the enzyme alpha-glucosidase snips off the glucose and gradually releases active ascorbic acid right where it's needed. Basically, it behaves like a slow-release pro-vitamin C with less of a stinging that high-strength ascorbic acid can cause.

The research supports the classic vitamin C benefits as well. In lab and human studies, AA-2G slowed down the skin's production of melanin (the pigment behind dark spots) and helped shield skin cells against sun damage better than ascorbyl phosphate.

These studies also showed AA-2G released vitamin C over a longer period.

A frequently cited manufacturer trial found that a 2% AA-2G face cream significantly improved wrinkle depth and skin roughness after 45 days.

And in 2009, a clinical trial showed it meaningfully lightened dark patches on the gums compared to a placebo.

There's also collagen-synthesis support (since vitamin C is a required cofactor for that) and an antioxidant effect too.

Typical usage is usually between 0.5-5% and most studies/products land around 2%.

AA-2G performs best when formulated at a mildly acidic pH (~5-7) which is much gentler than the pH that pure vitamin C demands (~2.5-3.5).

Just one thing worth knowing: the in-skin conversation rate is only about 55-60% by weight. So a 5% AA-2G product delivers roughly 2.75-3% of actual active vitamin C. On top of that, skin absorption is relatively low because the ingredient is water-soluble.

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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