Paula's Choice Resist Intensive Wrinkle-Repair Retinol Serum Versus FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1

Paula's Choice Resist Intensive Wrinkle-Repair Retinol Serum Versus FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1 Detailed comparison of Paula's Choice Resist Intensive Wrinkle-Repair Retinol Serum versus FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1. This anti-aging serum is formulated around Retinol and Tetrahexyldecyl Ascorbate to soften the look of wrinkles and refine skin texture. This brightening serum is formulated around Retinyl Palmitate and Sodium Ascorbyl Phosphate to brighten dull-looking skin. Cyclopentasiloxane Dimethiconol Neopentyl Glycol Diheptanoate Dicaprylyl Carbonate Caprylic/Capric Triglyceride Phenyl Trimethicone Squalane Bisabolol Tetrahexyldecyl Ascorbate Retinol Tocotrienols Tocopherol Lecithin Laminaria Ochroleuca Extract Avena Sativa Kernel Extract Elaeis Guineensis Oil Stearyl Glycyrrhetinate Hexylene Glycol Caprylyl Glycol Ethylhexylglycerin Phenoxyethanol Cyclopentasiloxane, Dimethiconol, Neopentyl Glycol Diheptanoate, Dicaprylyl Carbonate, Caprylic/Capric Triglyceride, Phenyl Trimethicone, Squalane, Bisabolol, Tetrahexyldecyl Ascorbate, Retinol, Tocotrienols, Tocopherol, Lecithin, Laminaria Ochroleuca Extract, Avena Sativa Kernel Extract, Elaeis Guineensis Oil, Stearyl Glycyrrhetinate, Hexylene Glycol, Caprylyl Glycol, Ethylhexylglycerin, Phenoxyethanol Water Propanediol Glycerin Polyglyceryl-4 Oleate Retinyl Palmitate Sodium Ascorbyl Phosphate Polyglyceryl-6 Stearate Sodium Anisate Sodium Levulinate Glyceryl Caprylate Anethum Graveolens Herb Extract Glycyrrhiza Glabra Root Extract Cetyl Hydroxyethylcellulose Lactic Acid Polyglyceryl-6 Behenate Ferulic Acid Xanthan Gum Salicylic Acid Sodium Hyaluronate Aloe Barbadensis Leaf Juice Citric Acid Potassium Sorbate Water, Propanediol, Glycerin, Polyglyceryl-4 Oleate, Retinyl Palmitate, Sodium Ascorbyl Phosphate, Polyglyceryl-6 Stearate, Tocopherol, Sodium Anisate, Sodium Levulinate, Glyceryl Caprylate, Anethum Graveolens Herb Extract, Glycyrrhiza Glabra Root Extract, Cetyl Hydroxyethylcellulose, Lactic Acid, Polyglyceryl-6 Behenate, Ferulic Acid, Xanthan Gum, Salicylic Acid, Sodium Hyaluronate, Aloe Barbadensis Leaf Juice, Citric Acid, Potassium Sorbate These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Tocopherol is a fat-soluble antioxidant known as Vitamin E. You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells. Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes. It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks. This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage. This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there. In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading. Concentrations usually range from 0.1-1% in most leave-on products.