Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Olay Vitamin C + Peptide 24 Versus La Roche-Posay Toleriane Ultra Fluide

Olay Vitamin C + Peptide 24 Versus La Roche-Posay Toleriane Ultra Fluide Detailed comparison of Olay Vitamin C + Peptide 24 versus La Roche-Posay Toleriane Ultra Fluide. This brightening moisturizer is formulated around Niacinamide and 3-O-Ethyl Ascorbic Acid

This source-based comparison does not add ratings or recommend a winner.

Olay Vitamin C + Peptide 24 Versus La Roche-Posay Toleriane Ultra Fluide Detailed comparison of Olay Vitamin C + Peptide 24 versus La Roche-Posay Toleriane Ultra Fluide. This brightening moisturizer is formulated around Niacinamide and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and soften the look of wrinkles. This barrier-repair moisturizer is formulated around Squalane and Acetyl Dipeptide-1 Cetyl Ester to strengthen the skin barrier and calm redness. Water Glycerin Isohexadecane Niacinamide Dimethicone Lactic Acid Isopropyl Isostearate Sodium Polyacryloyldimethyl Taurate Stearyl Alcohol 3-O-Ethyl Ascorbic Acid Palmitoyl Pentapeptide-4 Panthenol Sodium Lactate Trehalose Cetearyl Glucoside Cetearyl Alcohol Behenyl Alcohol Cetyl Alcohol Stearic Acid Palmitic Acid Dimethiconol PEG-100 Stearate Sodium Benzoate Parfum Ascorbic Acid Avena Sativa Peptide Water, Glycerin, Isohexadecane, Niacinamide, Dimethicone, Lactic Acid, Isopropyl Isostearate, Sodium Polyacryloyldimethyl Taurate, Stearyl Alcohol, 3-O-Ethyl Ascorbic Acid, Palmitoyl Pentapeptide-4, Panthenol, Sodium Lactate, Trehalose, Cetearyl Glucoside, Cetearyl Alcohol, Behenyl Alcohol, Cetyl Alcohol, Stearic Acid, Palmitic Acid, Dimethiconol, PEG-100 Stearate, Sodium Benzoate, Parfum, Ascorbic Acid, Avena Sativa Peptide Squalane Propanediol Butylene Glycol Butyrospermum Parkii Butter Pentylene Glycol Polymethylsilsesquioxane Polysorbate 20 Glyceryl Acrylate/Acrylic Acid Copolymer Aluminum Starch Octenylsuccinate Ammonium Polyacryloyldimethyl Taurate Disodium EDTA Acetyl Dipeptide-1 Cetyl Ester Water, Glycerin, Squalane, Propanediol, Butylene Glycol, Butyrospermum Parkii Butter, Pentylene Glycol, Dimethicone, Polymethylsilsesquioxane, Polysorbate 20, Glyceryl Acrylate/Acrylic Acid Copolymer, Dimethiconol, Aluminum Starch Octenylsuccinate, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Acetyl Dipeptide-1 Cetyl Ester Be the first to review These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane. What it does: Dimethicone comes in different viscosities: Depending on the viscosity, dimethicone has different properties. Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity. This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient. Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy. Dimethiconol is a silicone that resembles the popular dimethicone. Like other silicones, it is an emollient. Emollients create a thin film on skin to prevent moisture from escaping. This ingredient helps to create a silky texture and improve spreadability. Due to its high molecular weight and thickness, it is often combined with cyclopentasiloxane. 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!