The INKEY List Polyglutamic Acid Hydrating Serum Versus The Ordinary Natural Moisturizing Factors + HA

The INKEY List Polyglutamic Acid Hydrating Serum Versus The Ordinary Natural Moisturizing Factors + HA Detailed comparison of The INKEY List Polyglutamic Acid Hydrating Serum versus The Ordinary Natural Moisturizing Factors + HA. This hydrating serum is formulated around Polyglutamic Acid to hydrate skin and strengthen the skin barrier. This barrier-repair moisturizer is formulated around Sodium Hyaluronate and Arginine to strengthen the skin barrier and hydrate skin. No key ingredients Water Dimethicone Butylene Glycol Bis-PEG-12 Dimethicone Glycerin Polymethylsilsesquioxane Polysilicone-11 Phenoxyethanol Polyglutamic Acid Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Isohexadecane Propanediol Coco-Glucoside Sodium Benzoate Hydroxyethylcellulose Polysorbate 80 Ethylhexylglycerin Potassium Sorbate Decyl Glucoside Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer Sorbitan Oleate Trisodium Ethylenediamine Disuccinate Caprylyl Glycol Hexylene Glycol Oryza Sativa Bran Extract Water, Dimethicone, Butylene Glycol, Bis-PEG-12 Dimethicone, Glycerin, Polymethylsilsesquioxane, Polysilicone-11, Phenoxyethanol, Polyglutamic Acid, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Isohexadecane, Propanediol, Coco-Glucoside, Sodium Benzoate, Hydroxyethylcellulose, Polysorbate 80, Ethylhexylglycerin, Potassium Sorbate, Decyl Glucoside, Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer, Sorbitan Oleate, Trisodium Ethylenediamine Disuccinate, Caprylyl Glycol, Hexylene Glycol, Oryza Sativa Bran Extract Caprylic/Capric Triglyceride Cetyl Alcohol Stearyl Alcohol Sodium Hyaluronate Arginine Aspartic Acid Glycine Alanine Serine Valine Isoleucine Proline Threonine Histidine Phenylalanine Glucose Maltose Fructose Trehalose Sodium PCA PCA Sodium Lactate Urea Allantoin Linoleic Acid Oleic Acid Phytosteryl Canola Glycerides Palmitic Acid Stearic Acid Lecithin Triolein Tocopherol Carbomer Isoceteth-20 Polysorbate 60 Sodium Chloride Citric Acid Pentylene Glycol Triethanolamine Sodium Hydroxide Chlorphenesin Water, Caprylic/Capric Triglyceride, Cetyl Alcohol, Propanediol, Stearyl Alcohol, Glycerin, Sodium Hyaluronate, Arginine, Aspartic Acid, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Glucose, Maltose, Fructose, Trehalose, Sodium PCA, PCA, Sodium Lactate, Urea, Allantoin, Linoleic Acid, Oleic Acid, Phytosteryl Canola Glycerides, Palmitic Acid, Stearic Acid, Lecithin, Triolein, Tocopherol, Carbomer, Isoceteth-20, Polysorbate 60, Sodium Chloride, Citric Acid, Trisodium Ethylenediamine Disuccinate, Pentylene Glycol, Triethanolamine, Sodium Hydroxide, Phenoxyethanol, Chlorphenesin These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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. Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!). It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome. On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive. Another perk of this ingredient is that it stays functional across a wide pH range (3-10). You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own. Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU. Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages. Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon. Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin. It’s often used to: Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent. Trisodium Ethylenediamine Disuccinate is used to help stabilize a product. It is a chelating agent, meaning it helps prevent metal ions from binding to other ingredients. This prevents unwanted reactions in products. Metal ions can come into a product via the water ingredient. They are found in trace amounts and are not known