Beauty of Joseon Light On Serum : Centella + Vita C Versus Kiehl's Powerful-Strength Vitamin C Serum

Beauty of Joseon Light On Serum : Centella + Vita C Versus Kiehl's Powerful-Strength Vitamin C Serum Detailed comparison of Beauty of Joseon Light On Serum : Centella + Vita C versus Kiehl's Powerful-Strength Vitamin C Serum. This brightening serum is formulated around Centella Asiatica Extract and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and calm redness. This anti-aging serum is formulated around Ascorbic Acid and Ascorbyl Glucoside to soften the look of wrinkles and brighten dull-looking skin. Centella Asiatica Extract 3-O-Ethyl Ascorbic Acid Glycerin Propanediol Betaine Dicaprylyl Carbonate Methyl Trimethicone Cetyl Ethylhexanoate Panthenol Laminaria Japonica Extract Eclipta Prostrata Leaf Extract Phellodendron Amurense Bark Extract Citrus Unshiu Peel Extract Brassica Oleracea Acephala Leaf Extract Hydrolyzed Gardenia Florida Extract Hydrogenated Lecithin Cetearyl Alcohol Water Dimethicone/Vinyl Dimethicone Crosspolymer Silica Bisabolol Potassium Cetyl Phosphate Hydrolyzed Jojoba Esters Cetearyl Olivate Sorbitan Olivate Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer Xanthan Gum Polyglyceryl-10 Myristate Adenosine Fructooligosaccharides Beta-Glucan Butylene Glycol Sorbitan Isostearate Hydrolyzed Hyaluronic Acid Maltodextrin Arginine Carbomer Ascorbic Acid Polypeptide 1,2-Hexanediol Hydroxyacetophenone Ethylhexylglycerin Centella Asiatica Extract, 3-O-Ethyl Ascorbic Acid, Glycerin, Propanediol, Betaine, Dicaprylyl Carbonate, Methyl Trimethicone, Cetyl Ethylhexanoate, Panthenol, Laminaria Japonica Extract, Eclipta Prostrata Leaf Extract, Phellodendron Amurense Bark Extract, Citrus Unshiu Peel Extract, Brassica Oleracea Acephala Leaf Extract, Hydrolyzed Gardenia Florida Extract, Hydrogenated Lecithin, Cetearyl Alcohol, Water, Dimethicone/Vinyl Dimethicone Crosspolymer, Silica, Bisabolol, Potassium Cetyl Phosphate, Hydrolyzed Jojoba Esters, Cetearyl Olivate, Sorbitan Olivate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer, Xanthan Gum, Polyglyceryl-10 Myristate, Adenosine, Fructooligosaccharides, Beta-Glucan, Butylene Glycol, Sorbitan Isostearate, Hydrolyzed Hyaluronic Acid, Maltodextrin, Arginine, Carbomer, Ascorbic Acid Polypeptide, 1,2-Hexanediol, Hydroxyacetophenone, Ethylhexylglycerin Propylene Glycol Dimethicone Ascorbic Acid Ethylhexyl Palmitate Cetyl PEG/PPG-10/1 Dimethicone Dimethicone Crosspolymer Ascorbyl Glucoside Cyclohexasiloxane Hydroxyethylpiperazine Ethane Sulfonic Acid Lauroyl Lysine Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer Polysilicone-11 Limonene Isobutane Citrus Aurantium Dulcis Peel Oil Citrus Limon Peel Oil Citral Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Propylene Glycol, Dimethicone, Glycerin, Ascorbic Acid, Ethylhexyl Palmitate, Cetyl PEG/PPG-10/1 Dimethicone, Dimethicone Crosspolymer, Ascorbyl Glucoside, Cyclohexasiloxane, Hydroxyethylpiperazine Ethane Sulfonic Acid, Lauroyl Lysine, Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer, Polysilicone-11, Adenosine, Hydrolyzed Hyaluronic Acid, Limonene, Isobutane, Citrus Aurantium Dulcis Peel Oil, Citrus Limon Peel Oil, Citral, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate 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. 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. Hydrolyzed Hyaluronic Acid is hyaluronic acid (HA) that is broken down into lower molecular weight fragments. It's a humectant that pulls and holds water in the skin to help with hydration, plumpness, and reduce transepidermal water loss. Because hydrolyzed hyaluronic acid is smaller in size, it can slip past your outermost layer of skin more easily than full-sized HA. Most formulations will combine all sizes to get the best of both worlds. Typical usage levels range from 0.01-1%. Any percentage h