La Roche-Posay Redermic R Eyes Anti-Aging Eye Cream with Retinol Versus Summer Fridays Jet Lag Overnight Eye Serum

La Roche-Posay Redermic R Eyes Anti-Aging Eye Cream with Retinol Versus Summer Fridays Jet Lag Overnight Eye Serum Detailed comparison of La Roche-Posay Redermic R Eyes Anti-Aging Eye Cream with Retinol versus Summer Fridays Jet Lag Overnight Eye Serum. This anti-aging eye moisturizer is formulated around Caffeine and Retinol to soften the look of wrinkles and refine skin texture. This anti-aging eye moisturizer is formulated around Ceramide NP and Retinyl Linoleate to soften the look of wrinkles and hydrate skin. Water Isocetyl Stearate Glycerin Octyldodecanol Propylene Glycol Pentylene Glycol Dimethicone Acrylamide/Sodium Acryloyldimethyltaurate Copolymer Cetearyl Alcohol Dimethicone/Vinyl Dimethicone Crosspolymer Caffeine Isohexadecane Sodium Hyaluronate Sodium Hydroxide Retinol Retinyl Linoleate Adenosine Ammonium Polyacryloyldimethyl Taurate Caprylyl Glycol Citric Acid Polysilicone-8 Polysorbate 80 Phenoxyethanol Water, Isocetyl Stearate, Glycerin, Octyldodecanol, Propylene Glycol, Pentylene Glycol, Dimethicone, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Cetearyl Alcohol, Dimethicone/Vinyl Dimethicone Crosspolymer, Caffeine, Isohexadecane, Sodium Hyaluronate, Sodium Hydroxide, Retinol, Retinyl Linoleate, Adenosine, Ammonium Polyacryloyldimethyl Taurate, Caprylyl Glycol, Citric Acid, Polysilicone-8, Polysorbate 80, Phenoxyethanol Squalane Caprylic/Capric Triglyceride Isodecyl Neopentanoate Hydrogenated Polydecene Rosa Canina Seed Oil Propanediol Sodium Acrylates Copolymer Borago Officinalis Seed Oil Oenothera Biennis Oil Ceramide NP Bisabolol Avena Sativa Bran Extract Glycyrrhetinic Acid Centella Asiatica Extract Phospholipids Tocopheryl Acetate Tocopherol Glycine Soja Oil Gluconolactone Polyglyceryl-10 Stearate 1,2-Hexanediol Lecithin Maltodextrin Potassium Sorbate Caprylhydroxamic Acid Trisodium Ethylenediamine Disuccinate Levulinic Acid Sodium Levulinate Benzyl Alcohol Sodium Benzoate Glycerin, Water, Squalane, Caprylic/Capric Triglyceride, Isodecyl Neopentanoate, Hydrogenated Polydecene, Pentylene Glycol, Rosa Canina Seed Oil, Propanediol, Sodium Acrylates Copolymer, Borago Officinalis Seed Oil, Oenothera Biennis Oil, Ceramide NP, Bisabolol, Avena Sativa Bran Extract, Glycyrrhetinic Acid, Centella Asiatica Extract, Phospholipids, Retinyl Linoleate, Retinol, Tocopheryl Acetate, Tocopherol, Glycine Soja Oil, Gluconolactone, Polyglyceryl-10 Stearate, 1,2-Hexanediol, Lecithin, Maltodextrin, Potassium Sorbate, Caprylhydroxamic Acid, Trisodium Ethylenediamine Disuccinate, Levulinic Acid, Sodium Levulinate, Benzyl Alcohol, Sodium Benzoate 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. Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula: Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses. On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations. Typical use levels in a formula run about 1-5%. Retinol is one of the most studied anti-aging ingredients in skincare (and for good reason!). It's a form of vitamin A that your skin converts into Retinoic Acid, the active molecule that actually does the work in your cells. That conversion happens in two steps: your skin first turns Retinol into Retinaldehyde (also called Retinal), then turns Retinaldehyde into Retinoic Acid. Retinol is converted to biologically active retinoic acid via retinaldehyde by dehydrogenases in a two-step oxidation process. Each step is a little "upgrade" toward the active form which is part of why Retinol is gentler than prescription Retinoic Acid; your skin does the work gradually. This also explains where Retinol sits in the retinoid family. Here is the retinoid family ranked roughly by strength: Retinyl Esters (like Retinyl Palmitate) < Retinol < Retinaldehyde < Retinoic Acid. Retinoid activity increases in that order, while tolerance runs in reverse; retinyl esters are the gentlest and retinoic acid the most irritating. The more conversion steps an ingredient needs, the gentler (and slower) it tends to be, so Retinol lands in a nice middle spot. It's more effective than the esters, gentler than prescription options. Once it becomes Retinoic Acid, it binds to receptors inside your cells' nuclei (called RARs and RXRs). These receptor pairs bind to specific DNA motifs called retinoic acid response elemen