Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus Dr. Dennis Gross Skincare Advanced Retinol + Ferulic Overnight Wrinkle Treatment

Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus Dr. Dennis Gross Skincare Advanced Retinol + Ferulic Overnight Wrinkle Treatment Detailed comparison of Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide versus Dr. Dennis Gross Skincare Advanced Retinol + Ferulic Overnight Wrinkle Treatment. This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. This anti-aging treatment is formulated around Niacinamide and Retinol to soften the look of wrinkles and refine skin texture. 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 Propanediol Caprylic/Capric Triglyceride Bakuchiol Nephelium Lappaceum Leaf Extract Ferulic Acid Lactic Acid Linoleic Acid Linolenic Acid Silybum Marianum Extract Saccharide Isomerate Phospholipids Oenothera Biennis Flower Extract Evodia Rutaecarpa Fruit Extract Sodium PCA Camellia Sinensis Leaf Extract Phytic Acid Glycolic Acid Mandelic Acid Maltodextrin Pvm/Ma Decadiene Crosspolymer Glyceryl Stearate Se Arachidyl Glucoside Octoxynol-9 Arachidyl Alcohol Ethylhexylglycerin Oleth-10 PEG-40 Hydrogenated Castor Oil Sodium Ascorbate Citrus Limon Peel Extract Citrus Aurantium Bergamia Fruit Extract Lavandula Angustifolia Flower/Leaf/Stem Extract Sodium Benzoate Potassium Sorbate Water, Niacinamide, Propanediol, Caprylic/Capric Triglyceride, Glycerin, Retinol, Bakuchiol, Nephelium Lappaceum Leaf Extract, Ferulic Acid, Sodium Hyaluronate, Lactic Acid, Linoleic Acid, Linolenic Acid, Silybum Marianum Extract, Saccharide Isomerate, Phospholipids, Oenothera Biennis Flower Extract, Adenosine, Evodia Rutaecarpa Fruit Extract, Sodium PCA, Camellia Sinensis Leaf Extract, Phytic Acid, Tocopherol, Glycolic Acid, Mandelic Acid, Maltodextrin, Sodium Hydroxide, Cetyl Alcohol, Pvm/Ma Decadiene Crosspolymer, Behenyl Alcohol, Glyceryl Stearate Se, Arachidyl Glucoside, Octoxynol-9, Arachidyl Alcohol, Ethylhexylglycerin, Oleth-10, PEG-40 Hydrogenated Castor Oil, Sodium Ascorbate, Citrus Limon P 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. Behenyl Alcohol is a type of fatty alcohol (these are different from the drying, solvent alcohols). Fatty Alcohols have hydrating properties and are most often used as an emollient or to thicken a product. They are usually derived from natural fats and oils; behenyl alcohol is derived from the fats of vegetable oils. Emollients help keep your skin soft and hydrated by creating a film that traps moisture in. In 2000, Behenyl Alcohol was approved by the US as medicine to reduce the duration of cold sores. Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product. Its main roles are: Though it has "alcohol" in the name, it is not related to denatured alcohol or ethyl alcohol. The FDA allows products labeled "alcohol-free" to have fatty alcohols. This ingredient may not be fungal acne safe. It is a primary fatty alcohol with a chain length above 12 carbons. A study from 2019 show Malassezia can feed on fatty alcohols in this range, so it may trigger fungal acne in those prone to it. 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