Olehenriksen Double Rewind 0.3% Pro-Grade Retinol Serum Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide

Olehenriksen Double Rewind 0.3% Pro-Grade Retinol Serum Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Detailed comparison of Olehenriksen Double Rewind 0.3% Pro-Grade Retinol Serum versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide. This anti-aging serum is formulated around Aloe Barbadensis Leaf Juice 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 Aloe Barbadensis Leaf Juice Sorbus Aucuparia Fruit Extract Betula Alba Juice Glycerin Caprylic/Capric Triglyceride Coco-Caprylate/Caprate Oleyl Lactate Propanediol Crambe Abyssinica Seed Oil Retinol Beta-Carotene Sodium Hyaluronate Tocopherol Tocopheryl Acetate Xanthophylls Camellia Sinensis Leaf Extract Rosmarinus Officinalis Leaf Extract Helianthus Annuus Seed Oil Lactobacillus Ferment Propyl Gallate Cellulose Biosaccharide Gum-1 Cetearyl Alcohol C14-22 Alcohols Cetyl Palmitate Sodium Polyacryloyldimethyl Taurate Sorbitan Palmitate Sodium Stearoyl Glutamate Maltodextrin C12-20 Alkyl Glucoside Sorbitan Oleate Xanthan Gum Sodium Polyacrylate Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Tetrasodium Glutamate Diacetate Polysorbate 20 Polysorbate 60 Sorbitan Isostearate Phenoxyethanol Ethylhexylglycerin Polycitronellol Parfum Citral Limonene Linalool Water, Aloe Barbadensis Leaf Juice, Sorbus Aucuparia Fruit Extract, Betula Alba Juice, Glycerin, Caprylic/Capric Triglyceride, Coco-Caprylate/Caprate, Oleyl Lactate, Propanediol, Crambe Abyssinica Seed Oil, Retinol, Beta-Carotene, Sodium Hyaluronate, Tocopherol, Tocopheryl Acetate, Xanthophylls, Camellia Sinensis Leaf Extract, Rosmarinus Officinalis Leaf Extract, Helianthus Annuus Seed Oil, Lactobacillus Ferment, Propyl Gallate, Cellulose, Biosaccharide Gum-1, Cetearyl Alcohol, C14-22 Alcohols, Cetyl Palmitate, Sodium Polyacryloyldimethyl Taurate, Sorbitan Palmitate, Sodium Stearoyl Glutamate, Maltodextrin, C12-20 Alkyl Glucoside, Sorbitan Oleate, Xanthan Gum, Sodium Polyacrylate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Tetrasodium Glutamate Diacetate, Polysorbate 20, Polysorbate 60, Sorbitan Isostearate, Phenoxyethanol, Ethylhexylglycerin, Polycitronellol, Parfum, Citral, Limonene, Linalool 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 Hydroxide Trisodium Ethylenediamine Disuccinate Dicaprylyl Ether Ammonium Polyacryloyldimethyl Taurate Behenyl Alcohol Caprylyl Glycol Carbomer Cetearyl Glucoside Glycine Soja Oil Hydroxyethylcellulose Lecithin Phenethyl Alcohol Poloxamer 188 Polycaprolactone Sorbitan Laurate Steareth-100 CI 40800 Chlorphenesin 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 Poly These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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 that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans. Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch test if you are unsure about certain ingredients. This ingredient is not fungal acne safe. Cetearyl alcohol is a fatty alcohol with chain lengths that fall within the range that Malassezia can metabolize. A 2019 study has also observed Malassezia growth in the presence of this ingredient, confirming it to be not-fungal acne safe. 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. Helianthus Annuus Seed Oil is a plant oil derived from the seeds of a sunflower. It is rich in fatty acids, primarily linoleic acid and oleic acid. This gives it emollient and skin conditioning properties. The reason this ingredient is so effective is because it forms a thin film on the skin that reduces transepidermal w