Paula's Choice C15 Super Booster Versus Peter Thomas Roth Potent-C™ Vitamin C Power Eye Cream

Paula's Choice C15 Super Booster Versus Peter Thomas Roth Potent-C™ Vitamin C Power Eye Cream Detailed comparison of Paula's Choice C15 Super Booster versus Peter Thomas Roth Potent-C™ Vitamin C Power Eye Cream. This brightening serum is formulated around Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and soften the look of wrinkles. This anti-aging eye moisturizer is formulated around Tetrahexyldecyl Ascorbate and Tocopheryl Acetate to soften the look of wrinkles and brighten dull-looking skin. Water Ascorbic Acid Dipropylene Glycol Propanediol Glycerin Ethoxydiglycol Sodium Hydroxide PPG-26-Buteth-26 PEG-40 Hydrogenated Castor Oil Bisabolol Ferulic Acid Sodium Phytate Decylene Glycol Tocopherol 1,2-Hexanediol Sphingomonas Ferment Extract Phenoxyethanol Water, Ascorbic Acid, Dipropylene Glycol, Propanediol, Glycerin, Ethoxydiglycol, Sodium Hydroxide, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Bisabolol, Ferulic Acid, Sodium Phytate, Decylene Glycol, Tocopherol, 1,2-Hexanediol, Sphingomonas Ferment Extract, Phenoxyethanol Butylene Glycol Tetrahexyldecyl Ascorbate C9-12 Alkane Tocopheryl Acetate Bambusa Arundinacea Stem Powder PEG-100 Stearate Cetyl Ricinoleate Butyrospermum Parkii Butter Behenyl Alcohol Methyl Trimethicone Carbomer Methyldihydrojasmonate Polymethylsilsesquioxane Saccharomyces Ferment Filtrate Hydrogenated Lecithin Diamond Powder Caffeine Sodium Hyaluronate Ubiquinone Ethylhexylglycerin Squalane Soluble Collagen Undaria Pinnatifida Extract Caesalpinia Spinosa Fruit Extract Arnica Montana Flower Extract Olea Europaea Fruit Oil Corallina Officinalis Extract Kappaphycus Alvarezii Extract Tribehenin C12-15 Alkyl Benzoate Coco-Caprylate/Caprate Caprylic/Capric Triglyceride Jojoba Wax PEG-120 Esters Myristyl Alcohol Steareth-20 Mica Sodium Benzoate Potassium Sorbate Water, Butylene Glycol, Tetrahexyldecyl Ascorbate, C9-12 Alkane, Tocopheryl Acetate, Bambusa Arundinacea Stem Powder, PEG-100 Stearate, Cetyl Ricinoleate, Ferulic Acid, Butyrospermum Parkii Butter, Behenyl Alcohol, Methyl Trimethicone, Glycerin, Carbomer, Methyldihydrojasmonate, Polymethylsilsesquioxane, Saccharomyces Ferment Filtrate, Hydrogenated Lecithin, Diamond Powder, Caffeine, Sodium Hyaluronate, Ubiquinone, Ethylhexylglycerin, Squalane, Soluble Collagen, Undaria Pinnatifida Extract, Caesalpinia Spinosa Fruit Extract, Arnica Montana Flower Extract, Olea Europaea Fruit Oil, Corallina Officinalis Extract, Kappaphycus Alvarezii Extract, Tribehenin, C12-15 Alkyl Benzoate, Coco-Caprylate/Caprate, Caprylic/Capric Triglyceride, Jojoba Wax PEG-120 Esters, Sodium Hydroxide, Myristyl Alcohol, Steareth-20, Mica, Sodium Benzoate, Potassium Sorbate, Phenoxyethanol 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. Ferulic Acid is a plant based antioxidant that can be naturally found in the cell walls of grains like rice, oats, and corn. It has antioxidant and antimicrobial properties, and has the ability to boost the performance of other antioxidants as well. A well-known study found that adding Ferulic Acid to a solution of Vitamins C and E doubled the photoprotection of skin. This is why you'll often see it paired with Vitamin C or Vitamin E serums rather than sold on its own. A 2025 review of 18 human studies found that using Ferulic Acid (0.5-1%) daily for one to three months showed improvements in: As far as allergies go, Ferulic acid is generally well-tolerated but can cause an allergic reaction in very rare cases. It's also worth noting that Ferulic acid is often extracted from plant sources like rice bran or wheat bran, so be sure to path test if you have known grain allergies. Outside of skincare, researchers are also looking into Ferulic Acid for its potential benefits in areas like diabetes, Alzheimer's, and heart health. 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. Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!). It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome. On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive. Another perk of this ingredient is that it stays functional across a wide pH range (3-10). You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own. Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped a