Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Olay Regenerist Retinol 24 + Peptide Night Moisturizer Versus Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum

Olay Regenerist Retinol 24 + Peptide Night Moisturizer Versus Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum Detailed comparison of Olay Regenerist Retinol 24 + Peptide Night Moisturizer versus Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol

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Olay Regenerist Retinol 24 + Peptide Night Moisturizer Versus Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum Detailed comparison of Olay Regenerist Retinol 24 + Peptide Night Moisturizer versus Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum. This anti-aging night moisturizer is formulated around Retinol and Niacinamide to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Panthenol and Adenosine to soften the look of wrinkles and fade the look of dark spots. Water Dimethicone Glycerin Tapioca Starch Dimethicone Crosspolymer Retinol Retinyl Propionate Niacinamide Palmitoyl Pentapeptide-4 Polyacrylamide C13-14 Isoparaffin DMDM Hydantoin Polysorbate 20 Laureth-4 Acrylates/C10-30 Alkyl Acrylate Crosspolymer Laureth-7 Dimethiconol Polymethylsilsesquioxane Aminomethyl Propanol Titanium Dioxide Disodium EDTA Iodopropynyl Butylcarbamate Caprylic/Capric Triglyceride Water, Dimethicone, Glycerin, Tapioca Starch, Dimethicone Crosspolymer, Retinol, Retinyl Propionate, Niacinamide, Palmitoyl Pentapeptide-4, Polyacrylamide, C13-14 Isoparaffin, DMDM Hydantoin, Polysorbate 20, Laureth-4, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Laureth-7, Dimethiconol, Polymethylsilsesquioxane, Aminomethyl Propanol, Titanium Dioxide, Disodium EDTA, Iodopropynyl Butylcarbamate, Caprylic/Capric Triglyceride Propanediol Butylene Glycol Glycereth-26 Panthenol 1,2-Hexanediol Polyglycerin-3 C12-14 Pareth-12 Phenoxyethanol Caprylyl Glycol Ammonium Acryloyldimethyltaurate/Vp Copolymer Betaine Xanthan Gum Ethylhexylglycerin Adenosine Carbomer Glyceryl Acrylate/Acrylic Acid Copolymer Tromethamine Glycereth-25 PCA Isostearate T-Butyl Alcohol Tocopherol Water, Glycerin, Propanediol, Butylene Glycol, Glycereth-26, Panthenol, 1,2-Hexanediol, Polyglycerin-3, C12-14 Pareth-12, Phenoxyethanol, Caprylyl Glycol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Betaine, Xanthan Gum, Ethylhexylglycerin, Adenosine, Carbomer, Glyceryl Acrylate/Acrylic Acid Copolymer, Tromethamine, Glycereth-25 PCA Isostearate, T-Butyl Alcohol, Tocopherol 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. 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!