StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide

StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Detailed comparison of StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide. This brightening serum is formulated around Sodium Ascorbyl Phosphate and Ascorbic Acid to brighten dull-looking skin and soften the look of wrinkles. This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. Water Sodium Ascorbyl Phosphate Glycereth-7 Triacetate Pentylene Glycol Polysorbate 20 Dipropylene Glycol Glycerin Dimethyl Isosorbide Ascorbyl Glucoside Ascorbic Acid Malpighia Glabra Fruit Juice Retinol Sodium Hyaluronate Myristyl Nicotinate Tamarindus Indica Seed Polysaccharide Orobanche Rapum Extract Malus Domestica Fruit Cell Culture Extract Camellia Sinensis Leaf Extract Xylitylglucoside Bacillus/Sea Salt Ferment Filtrate Hydroxymethoxyphenyl Decanone Anhydroxylitol Adenosine Xylitol Glucose Ethylhexylglycerin Lecithin Xanthan Gum Acrylates/C10-30 Alkyl Acrylate Crosspolymer Propanediol Maltodextrin Rhizobian Gum Mica Parfum Limonene Linalool Geraniol Citral Citronellol Benzyl Benzoate Chlorphenesin Phenoxyethanol BHT BHA Sodium Benzoate Potassium Sorbate CI 77491 CI 77891 Water, Sodium Ascorbyl Phosphate, Glycereth-7 Triacetate, Pentylene Glycol, Polysorbate 20, Dipropylene Glycol, Glycerin, Dimethyl Isosorbide, Ascorbyl Glucoside, Ascorbic Acid, Malpighia Glabra Fruit Juice, Retinol, Sodium Hyaluronate, Myristyl Nicotinate, Tamarindus Indica Seed Polysaccharide, Orobanche Rapum Extract, Malus Domestica Fruit Cell Culture Extract, Camellia Sinensis Leaf Extract, Xylitylglucoside, Bacillus/Sea Salt Ferment Filtrate, Hydroxymethoxyphenyl Decanone, Anhydroxylitol, Adenosine, Xylitol, Glucose, Ethylhexylglycerin, Lecithin, Xanthan Gum, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Propanediol, Maltodextrin, Rhizobian Gum, Mica, Parfum, Limonene, Linalool, Geraniol, Citral, Citronellol, Benzyl Benzoate, Chlorphenesin, Phenoxyethanol, BHT, BHA, Sodium Benzoate, Potassium Sorbate, CI 77491, CI 77891 Butylene Glycol Niacinamide Cetyl Alcohol Isohexadecane Isononyl Isononanoate Diisopropyl Sebacate 2-Oleamido-1,3-Octadecanediol 4-T-Butylcyclohexanol Acetyl Dipeptide-1 Cetyl Ester Ceramide NP Hydroxypalmitoyl Sphinganine Lauroyl Lysine Octyldodecanol Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Sodium Chloride Sodium Hydroxide Trisodium Ethylenediamine Disuccinate Tocopherol Dicaprylyl Ether Ammonium Polyacryloyldimethyl Taurate Behenyl Alcohol Caprylyl Glycol Carbomer Cetearyl Alcohol Cetearyl Glucoside Glycine Soja Oil Helianthus Annuus Seed Oil Hydroxyethylcellulose Phenethyl Alcohol Poloxamer 188 Polycaprolactone Sorbitan Laurate Steareth-100 CI 40800 Water, Glycerin, Butylene Glycol, Pentylene Glycol, Niacinamide, Cetyl Alcohol, Isohexadecane, Isononyl Isononanoate, Diisopropyl Sebacate, 2-Oleamido-1,3-Octadecanediol, 4-T-Butylcyclohexanol, Acetyl Dipeptide-1 Cetyl Ester, Adenosine, Ceramide NP, Hydroxypalmitoyl Sphinganine, Lauroyl Lysine, Octyldodecanol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Chloride, Sodium Hyaluronate, Sodium Hydroxide, Trisodium Ethylenediamine Disuccinate, Retinol, Tocopherol, Dicaprylyl Ether, Ammonium Polyacryloyldimethyl Taurate, Behenyl Alcohol, Caprylyl Glycol, Carbomer, Cetearyl Alcohol, Cetearyl Glucoside, Glycine Soja Oil, Helianthus Annuus Seed Oil, Hydroxyethylcellulose, Lecith 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. Adenosine is a purine nucleoside that your body already makes in every cell. In skincare, it acts mainly as a skin conditioning and anti-aging agent. The way it works is fairly well mapped out: Your skin has cells called fibroblasts that build collagen (the stuff that keeps skin firm and smooth). Adenosine basically flips a switch on these cells that tells them to get to work making more collagen and other proteins. These cells slow down on their own as skin ages, so Adenosine helps give them a little nudge to keep going. The clinical backing is pretty solid too. A blind, randomized, placebo-controlled trial of 126 women aged 45-65 tested a 0.1% cream twice daily and found real improvements in crow's feet and frown lines using a precise 3D skin-mapping technique; these changes showed up by week 3 and held at 2 months. A later study using Adenosine-loaded dissolving microneedle patches reported gains in wrinkle depth, dermal density, elasticity, and hydration. On concentrations, South Korea's Ministry of Food and Drug Safety has set 0.04% as the approved functional anti-wrinkle level. You'll typically see this ingredient used somewhere in the 0.04-0.1% range since it works at low doses. This ingredient has been found safe for cosmetics with the data showing no irritation or sensitization. Overall, this is a great ingredient for any anti-aging routine and has no photosensitizing effect, so it suits both AM and PM use. Chlorphenesin is a synthetic preservative. It helps protect a product against bacteria in order to extend shelf life. In most cases, Chlorphenesin is paired with other preservatives such as phenoxyethanol and caprylyl glycol. Chlorphenesin is a biocide. This means it is able to help fight the microorganisms on our skin. It is also able to fight odor-releasing bacteria. Chlorphenesin is soluble in both water and glycerin. Studies show Chlorphenesin is easily absorbed by our skin. You should speak with a skincare professional if you have concerns about using Chlorphenesin. 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 th