Skin science article
La Roche-Posay Pure Vitamin C Eye Cream Versus La Roche-Posay Hyalu B5 Eye Serum
La Roche-Posay Pure Vitamin C Eye Cream Versus La Roche-Posay Hyalu B5 Eye Serum This anti-aging eye moisturizer is formulated around Ascorbic Acid and Madecassoside to soften the look of wrinkles and brighten dull-looking skin. This barrier-repair eye moistur
La Roche-Posay Pure Vitamin C Eye Cream Versus La Roche-Posay Hyalu B5 Eye Serum
This anti-aging eye moisturizer is formulated around Ascorbic Acid and Madecassoside to soften the look of wrinkles and brighten dull-looking skin.
This barrier-repair eye moisturizer is formulated around Niacinamide and Panthenol to strengthen the skin barrier and hydrate skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Glycerin
Dimethicone
Butyrospermum Parkii Butter
Limnanthes Alba Seed Oil
Ascorbic Acid
Mannose
Butylene Glycol
Paraffinum Liquidum
Ammonium Polyacryloyldimethyl Taurate
Cetyl Alcohol
PEG-100 Stearate
Glyceryl Stearate
Polymethylsilsesquioxane
Potassium Hydroxide
Paraffin
Sodium Styrene/Ma Copolymer
Microcrystalline Wax
Madecassoside
Dimethicone/Vinyl Dimethicone Crosspolymer
Dimethiconol
Disodium EDTA
Hydrolyzed Hyaluronic Acid
Caprylyl Glycol
Acetyl Dipeptide-1 Cetyl Ester
Xanthan Gum
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Phenoxyethanol
Water, Glycerin, Dimethicone, Butyrospermum Parkii Butter, Limnanthes Alba Seed Oil, Ascorbic Acid, Mannose, Butylene Glycol, Paraffinum Liquidum, Ammonium Polyacryloyldimethyl Taurate, Cetyl Alcohol, PEG-100 Stearate, Glyceryl Stearate, Polymethylsilsesquioxane, Potassium Hydroxide, Paraffin, Sodium Styrene/Ma Copolymer, Microcrystalline Wax, Madecassoside, Dimethicone/Vinyl Dimethicone Crosspolymer, Dimethiconol, Disodium EDTA, Hydrolyzed Hyaluronic Acid, Caprylyl Glycol, Acetyl Dipeptide-1 Cetyl Ester, Xanthan Gum, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Phenoxyethanol
Hydroxyethylpiperazine Ethane Sulfonic Acid
Niacinamide
Pentylene Glycol
Panthenol
Sodium Hyaluronate
Caffeine
Ascorbyl Glucoside
Hydroxyacetophenone
Citric Acid
Trisodium Ethylenediamine Disuccinate
Water, Glycerin, Hydroxyethylpiperazine Ethane Sulfonic Acid, Niacinamide, Pentylene Glycol, Panthenol, Sodium Hyaluronate, Caffeine, Ascorbyl Glucoside, Hydroxyacetophenone, Caprylyl Glycol, Citric Acid, Trisodium Ethylenediamine Disuccinate
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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.
Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
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.
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!