Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

La Roche-Posay Pure Vitamin C Eye Cream Versus La Roche-Posay Redermic C Face

La Roche-Posay Pure Vitamin C Eye Cream Versus La Roche-Posay Redermic C Face Detailed comparison of La Roche-Posay Pure Vitamin C Eye Cream versus La Roche-Posay Redermic C Face. This anti-aging eye moisturizer is formulated around Ascorbic Acid and Madecasso

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La Roche-Posay Pure Vitamin C Eye Cream Versus La Roche-Posay Redermic C Face Detailed comparison of La Roche-Posay Pure Vitamin C Eye Cream versus La Roche-Posay Redermic C Face. This anti-aging eye moisturizer is formulated around Ascorbic Acid and Madecassoside to soften the look of wrinkles and brighten dull-looking skin. This anti-aging moisturizer is formulated around Ascorbic Acid and Madecassoside to soften the look of wrinkles and brighten dull-looking skin. 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 Isocetyl Stearate Caprylic/Capric Triglyceride Sucrose Tristearate Steareth-10 Isobutane Sodium Stearoyl Glutamate Propylene Glycol Hydrogenated Lecithin Tetrasodium EDTA Toluene Sulfonic Acid Acrylates/C10-30 Alkyl Acrylate Crosspolymer Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer Parfum Water, Dimethicone, Isocetyl Stearate, Glycerin, Mannose, Ascorbic Acid, Caprylic/Capric Triglyceride, Butylene Glycol, Sucrose Tristearate, Potassium Hydroxide, Polymethylsilsesquioxane, Steareth-10, Isobutane, Madecassoside, Sodium Stearoyl Glutamate, Disodium EDTA, Propylene Glycol, Hydrogenated Lecithin, Hydrolyzed Hyaluronic Acid, Caprylyl Glycol, Tetrasodium EDTA, Acetyl Dipeptide-1 Cetyl Ester, Xanthan Gum, Toluene Sulfonic Acid, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer, Phenoxyethanol, Parfum These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Acetyl Dipeptide-1 Cetyl Ester is a peptide composed of amino acids arginine and tyrosine. This peptide is considered a neurotransmitter peptide, meaning it has pain-relieving and relaxing properties. It has the ability to calm skin irritation from external factors such as chemical stinging or heat. Neurotransmitter peptides are also often called "botox in a bottle". This is because these peptides have the ability to relax the muscles. Though relaxing the muscles can prevent expression lines (as we have seen in botox), the studies do not show these peptides to be a botox replacement. The effects of this muscle relaxation is also short-term, as opposed to longer-term results from botox. 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. 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