The INKEY List 1% Retinol Serum Versus ZO Skin Health Retinol Skin Brightener 0.25%

The INKEY List 1% Retinol Serum Versus ZO Skin Health Retinol Skin Brightener 0.25% Detailed comparison of The INKEY List 1% Retinol Serum versus ZO Skin Health Retinol Skin Brightener 0.25%. This anti-aging serum is formulated around Retinol to soften the look of wrinkles and refine skin texture. This brightening serum is formulated around Retinol and Ascorbyl Glucoside to fade the look of dark spots and brighten dull-looking skin. Water Glycerin Prunus Armeniaca Kernel Oil Persea Gratissima Oil Caprylic/Capric Triglyceride Squalane Cetearyl Alcohol Glyceryl Stearate Se Retinol Phenoxyethanol Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Benzyl Alcohol Phospholipids Tocopherol Polyacrylate Crosspolymer-6 Glycine Soja Oil Ethylhexylglycerin Glycolipids Dehydroacetic Acid Polysorbate 60 Sorbitan Isostearate Trisodium Ethylenediamine Disuccinate Glycine Soja Sterols T-Butyl Alcohol Water, Glycerin, Prunus Armeniaca Kernel Oil, Persea Gratissima Oil, Caprylic/Capric Triglyceride, Squalane, Cetearyl Alcohol, Glyceryl Stearate Se, Retinol, Phenoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Benzyl Alcohol, Phospholipids, Tocopherol, Polyacrylate Crosspolymer-6, Glycine Soja Oil, Ethylhexylglycerin, Glycolipids, Dehydroacetic Acid, Polysorbate 60, Sorbitan Isostearate, Trisodium Ethylenediamine Disuccinate, Glycine Soja Sterols, T-Butyl Alcohol Dimethicone Cetearyl Isononanoate Prunus Amygdalus Dulcis Oil Steareth-20 Pentylene Glycol Ascorbyl Glucoside Cetyl Alcohol Acrylamide/Ammonium Acrylate Copolymer Pelargonium Graveolens Flower Oil Lavandula Angustifolia Oil Propylheptyl Caprylate Bakuchiol Acetyl Glucosamine Cetearyl Glucoside Lecithin Polyisobutene Alcohol Glutathione Carbomer Caprylyl Glycol Bisabolol 1,2-Hexanediol Silica Polysorbate 20 Polysorbate 80 Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Disodium EDTA Gluconolactone Tocopheryl Acetate Sodium Sulfite Sodium Metabisulfite Ascorbyl Palmitate BHT Soy Isoflavones Sodium Hydroxide Potassium Sorbate Sodium Benzoate Linalool Citronellol Geraniol Limonene Citral Coumarin Water, Dimethicone, Cetearyl Isononanoate, Glycerin, Prunus Amygdalus Dulcis Oil, Cetearyl Alcohol, Steareth-20, Pentylene Glycol, Ascorbyl Glucoside, Cetyl Alcohol, Acrylamide/Ammonium Acrylate Copolymer, Prunus Armeniaca Kernel Oil, Pelargonium Graveolens Flower Oil, Lavandula Angustifolia Oil, Propylheptyl Caprylate, Bakuchiol, Acetyl Glucosamine, Cetearyl Glucoside, Lecithin, Polyisobutene, Alcohol, Glutathione, Carbomer, Caprylyl Glycol, Bisabolol, 1,2-Hexanediol, Silica, Polysorbate 20, Retinol, Polysorbate 80, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Disodium EDTA, Sorbitan Isostearate, Gluconolactone, Tocopheryl Acetate, Sodium Sulfite, Sodium Metabisulfite, Ascorbyl Palmitate, BHT, Soy Isoflavones, Sodium Hydroxide, Potassium Sorbate, Sodium Benzoate, Linalool, Citronellol, Geraniol, Limonene, Citral, Coumarin 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. 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. This ingredient is the oil from the apricot. Apricot Kernel Oil is an emollient and helps soften skin. This is due to its fatty acid components. Some of these fatty acids include linoleic and oleic acid. This ingredient also has antioxidant properties from Vitamins A, C, and E. Antioxidants help fight free-radicals. Free