StriVectin Advanced Retinol Nightly Renewal Moisturizer Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide

StriVectin Advanced Retinol Nightly Renewal Moisturizer Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Detailed comparison of StriVectin Advanced Retinol Nightly Renewal Moisturizer versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide. This anti-aging night moisturizer is formulated around Retinal and Retinol to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. Water Trimethylolpropane Tricaprylate/Tricaprate Caprylic/Capric/Myristic/Stearic Triglyceride Caprylic/Capric Triglyceride Glycerin Myristyl Nicotinate Dimethicone Cetearyl Alcohol Bis-Stearyl Dimethicone Pentaerythrityl Distearate Aloe Barbadensis Leaf Juice Isosorbide Dicaprylate Hydrogenated Ethylhexyl Olivate Glyceryl Stearate Stearoxymethicone/Dimethicone Copolymer Cetyl Palmitate 1,2-Hexanediol Retinal Retinol Bidens Pilosa Extract Acetyl Hexapeptide-8 Beta-Glucan Avena Sativa Kernel Extract Oryza Sativa Bran Extract Glycine Soja Seed Extract Astrocaryum Murumuru Seed Butter Gossypium Herbaceum Seed Oil Butyrospermum Parkii Butter Helianthus Annuus Extract Hydrogenated Olive Oil Unsaponifiables Linum Usitatissimum Seed Oil Rosmarinus Officinalis Leaf Extract Bacillus/Sea Salt Ferment Filtrate Salix Alba Bark Extract Adenosine Sodium Hyaluronate Zingiber Officinale Root Extract Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Ceteareth-20 Bisabolol Polysorbate 20 Isohexadecane Lactic Acid Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer Ascorbic Acid Propyl Gallate PEG-40 Stearate Polysilicone-11 Sorbitan Isostearate Polysorbate 60 Tocopherol Caprylyl Glycol Tocopheryl Acetate Pentylene Glycol Ethylhexylglycerin Xanthan Gum Resveratrol Disodium EDTA Aminomethyl Propanol Parfum BHT Phenoxyethanol Potassium Sorbate Phenethyl Alcohol Citric Acid Water, Trimethylolpropane Tricaprylate/Tricaprate, Caprylic/Capric/Myristic/Stearic Triglyceride, Caprylic/Capric Triglyceride, Glycerin, Myristyl Nicotinate, Dimethicone, Cetearyl Alcohol, Bis-Stearyl Dimethicone, Pentaerythrityl Distearate, Aloe Barbadensis Leaf Juice, Isosorbide Dicaprylate, Hydrogenated Ethylhexyl Olivate, Glyceryl Stearate, Stearoxymethicone/Dimethicone Copolymer, Cetyl Palmitate, 1,2-Hexanediol, Retinal, Retinol, Bidens Pilosa Extract, Acetyl Hexapeptide-8, Beta-Glucan, Avena Sativa Kernel Extract, Oryza Sativa Bran Extract, Glycine Soja Seed Extract, Astrocaryum Murumuru Seed Butter, Gossypium Herbaceum Seed Oil, Butyrospermum Parkii Butter, Helianthus Annuus Extract, Hydrogenated Olive Oil Unsaponifiables, Linum Usitatissimum Seed Oil, Rosmarinus Officinalis Leaf Extract, Bacillus/Sea Salt Ferment Filtrate, Salix Alba Bark Extract, Adenosine, Sodium Hyaluronate, Zingiber Officinale Root Extract, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Ceteareth-20, Bisabolol, Polysorbate 20, Isohexadecane, Lactic Acid, Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer, Ascorbic Acid, Propyl Gallate, PEG-40 Stearate, Polysilicone-11, Sorbitan Isostearate, Polysorbate 60, Tocopherol, Caprylyl Glycol, Tocopheryl Acetate, Pentylene Glycol, Ethylhexylglycerin, Xanthan Gum, Resveratrol, Disodium EDTA, Aminomethyl Propanol, Parfum, BHT, Phenoxyethanol, Potassium Sorbate, Phenethyl Alcohol, Citric Acid Butylene Glycol Niacinamide Cetyl Alcohol Isononyl Isononanoate Diisopropyl Sebacate 2-Oleamido-1,3-Octadecanediol 4-T-Butylcyclohexanol Acetyl Dipeptid 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. 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). Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier. Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient. It plays several roles in a formula: Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products. Multiple assessments have found it to be non-irritating and non-sensitizing to most people. However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers. Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy. Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found