TRUology C-Boost Intense Defense Serum Versus Paula's Choice C15 Super Booster

TRUology C-Boost Intense Defense Serum Versus Paula's Choice C15 Super Booster Detailed comparison of TRUology C-Boost Intense Defense Serum versus Paula's Choice C15 Super Booster. This brightening serum is formulated around Tetrahexyldecyl Ascorbate and Astaxanthin to brighten dull-looking skin and soften the look of wrinkles. This brightening serum is formulated around Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and soften the look of wrinkles. Water Tetrahexyldecyl Ascorbate Squalane Glycerin Propanediol Caprylic/Capric Triglyceride Cetearyl Alcohol Sodium Hyaluronate Trifluoroacetyl Tripeptide-2 Astaxanthin Bisabolol Glutathione Ergothioneine Cetearyl Olivate Sorbitan Olivate Ceteareth-20 Dextran Ferulic Acid Fulvic Acid Plankton Extract Chlorella Vulgaris Extract Zingiber Officinale Root Extract Camellia Sinensis Leaf Extract Vitis Vinifera Seed Extract Curcuma Longa Root Extract Glycyrrhiza Glabra Root Extract Arctostaphylos Uva Ursi Leaf Extract Tocopherol Magnesium Ascorbyl Phosphate Lecithin Acrylates/C10-30 Alkyl Acrylate Crosspolymer Carbomer Phenoxyethanol Ethylhexylglycerin Sodium Hydroxide Water, Tetrahexyldecyl Ascorbate, Squalane, Glycerin, Propanediol, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Sodium Hyaluronate, Trifluoroacetyl Tripeptide-2, Astaxanthin, Bisabolol, Glutathione, Ergothioneine, Cetearyl Olivate, Sorbitan Olivate, Ceteareth-20, Dextran, Ferulic Acid, Fulvic Acid, Plankton Extract, Chlorella Vulgaris Extract, Zingiber Officinale Root Extract, Camellia Sinensis Leaf Extract, Vitis Vinifera Seed Extract, Curcuma Longa Root Extract, Glycyrrhiza Glabra Root Extract, Arctostaphylos Uva Ursi Leaf Extract, Tocopherol, Magnesium Ascorbyl Phosphate, Lecithin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Phenoxyethanol, Ethylhexylglycerin, Sodium Hydroxide Ascorbic Acid Dipropylene Glycol Ethoxydiglycol PPG-26-Buteth-26 PEG-40 Hydrogenated Castor Oil Sodium Phytate Decylene Glycol 1,2-Hexanediol Sphingomonas Ferment Extract 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 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. Bisabolol is a gentle skin conditioner, antioxidant, and soothing ingredient. It's primary claim to fame is soothing and research shows topically applied bisabolol can quiet the chemical messengers that cause your skin to become inflamed, helping to sooth any irritation. A clinical study found that applying 0.5% bisabolol daily for 8 weeks produced an average 9% decrease in skin pigmentation. Researchers found it can also suppress the process that leads to excess melanin production in skin. In vitro studies found that bisabolol combined with propylene glycol significantly increased skin permeability by increasing lipid fluidity in the stratum corneum. You'll likely see use concentrations quite low, usually 0.1-0.2%. Overall, this is a well-tolerated ingredient that works well in formulas designed for sensitive, reactive, or post-procedure skin. 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