Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus AHC Beauty The Real Eye Cream for Face

Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus AHC Beauty The Real Eye Cream for Face Detailed comparison of Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide versus AHC Beauty The Real Eye Cream for Face. This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. This anti-aging eye moisturizer is formulated around Oryza Sativa Extract and Bifida Ferment Lysate to soften the look of wrinkles and hydrate skin. 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 Lecithin Phenethyl Alcohol Poloxamer 188 Polycaprolactone Sorbitan Laurate Steareth-100 CI 40800 Chlorphenesin Phenoxyethanol 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, Lecithin, Phenethyl Alcohol, Poloxamer 188, Polycaprolactone, Sorbitan Laurate, Steareth-100, CI 40800, Chlorphenesin, Phenoxyethanol Oryza Sativa Extract Methylpropanediol Bifida Ferment Lysate Dimethicone Snail Secretion Filtrate Cyclopentasiloxane Butyrospermum Parkii Butter Dioscorea Japonica Root Extract Hydrogenated Polydecene Tremella Fuciformis Extract Arctium Lappa Root Extract Piper Methysticum Leaf/Root/Stem Extract Rose Extract Centella Asiatica Extract Houttuynia Cordata Extract Collagen Extract Pseudoalteromonas Exopolysaccharides Anastatica Hierochuntica Extract Phaseolus Lunatus Seed Extract Argania Spinosa Kernel Oil Epilobium Angustifolium Flower/Leaf/Stem Extract Nymphaea Alba Flower Extract Lepidium Meyenii Root Extract Salicornia Herbacea Extract Hydrogenated Lecithin Oenothera Biennis Oil Borago Officinalis Seed Oil Centaurea Cyanus Flower Water Polysorbate 60 Phytosteryl/Behenyl/Octyldodecyl Lauroyl Glutamate Cetearyl Olivate Sorbitan Olivate Polyacrylate-13 Hydroxyacetophenone Polyglyceryl-2 Stearate C12-16 Alcohols Polysorbate 20 Polyisobutene Dimethicone/Vinyl Dimethicone Crosspolymer Glyceryl Stearate Stearyl Alcohol 1,2-Hexanediol Tranexamic Acid Sodium Polyacrylate Palmitic Acid Ethylhexylglycerin Tocopheryl Acetate Polyquaternium-51 Glycosyl Trehalose Xanthan Gum Disodium Stearoyl Glutamate Hydrogenated Starch Hydrolysate Raffinose Biosaccharide Gum-1 Disodium EDTA Panthenol Dipropylene Glycol Saccharomyces Ferment Filtrate Folic Acid Sodium Palmitoyl Proline Cholesterol These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Acetyl Dipeptide-1 Cetyl Ester is a peptide composed of amino acids arginine and tyrosine. This peptide is considered a neurotransmitter peptide, meaning it has pain-relieving and relaxing properties. It has the ability to calm skin irritation from external factors such as chemical stinging or heat. Neurotransmitter peptides are also often called "botox in a bottle". This is because these peptides have the ability to relax the muscles. Though relaxing the muscles can prevent expression lines (as we have seen in botox), the studies do not show these peptides to be a botox replacement. The effects of this muscle relaxation is also short-term, as opposed to longer-term results from botox. 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. Butylene Glycol (or BG) is used within cosmetic products for a few different reasons: Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients. Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness. Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created. Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin. Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on). Carbomer is