Grace & Stella Hyaluronic Acid Serum Versus SkinMedica HA5 Rejuvenating Hydrator

Grace & Stella Hyaluronic Acid Serum Versus SkinMedica HA5 Rejuvenating Hydrator Detailed comparison of Grace & Stella Hyaluronic Acid Serum versus SkinMedica HA5 Rejuvenating Hydrator. This hydrating serum is formulated around Sodium Hyaluronate and Sodium Hyaluronate Crosspolymer to hydrate skin and strengthen the skin barrier. This hydrating serum is formulated around Sodium Hyaluronate Crosspolymer and Hydrolyzed Hyaluronic Acid to hydrate skin and soften the look of wrinkles. Water Sodium Hyaluronate Sodium Hyaluronate Crosspolymer Panthenol Ahnfeltia Concinna Extract Glycerin Pentylene Glycol Propanediol Polyacrylate Crosspolymer-6 Phenoxyethanol Caprylyl Glycol Hexylene Glycol PPG-26-Buteth-26 PEG-40 Hydrogenated Castor Oil Trisodium Ethylenediamine Disuccinate Citric Acid Ethoxydiglycol Ethylhexylglycerin Chlorphenesin Hyaluronic Acid Potassium Sorbate Water, Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Panthenol, Ahnfeltia Concinna Extract, Glycerin, Pentylene Glycol, Propanediol, Polyacrylate Crosspolymer-6, Phenoxyethanol, Caprylyl Glycol, Hexylene Glycol, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Trisodium Ethylenediamine Disuccinate, Citric Acid, Ethoxydiglycol, Ethylhexylglycerin, Chlorphenesin, Hyaluronic Acid, Potassium Sorbate Dimethicone Hdi/Trimethylol Hexyllactone Crosspolymer Butylene Glycol Bis-PEG-8 Dimethicone Polysilicone-11 Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Hydrolyzed Hyaluronic Acid Vitis Vinifera Flower Cell Extract Vibrio Alginolyticus Ferment Filtrate Alteromonas Ferment Extract Porphyridium Cruentum Extract Whey Protein Plankton Extract Trehalose Urea Serine Algin Pullulan Disodium Phosphate Potassium Phosphate Polymethylsilsesquioxane Glyceryl Polyacrylate Sodium Citrate Sea Water Sucrose Palmitate Tocopheryl Acetate Hydroxyacetophenone Polysorbate 60 Isohexadecane Polysorbate 80 Silica Decyl Glucoside Tromethamine Disodium EDTA Water, Dimethicone, Hdi/Trimethylol Hexyllactone Crosspolymer, Glycerin, Butylene Glycol, Bis-PEG-8 Dimethicone, Polysilicone-11, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Hyaluronate Crosspolymer, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Vitis Vinifera Flower Cell Extract, Vibrio Alginolyticus Ferment Filtrate, Alteromonas Ferment Extract, Porphyridium Cruentum Extract, Whey Protein, Plankton Extract, Trehalose, Urea, Serine, Algin, Caprylyl Glycol, Pullulan, Disodium Phosphate, Potassium Phosphate, Pentylene Glycol, Polymethylsilsesquioxane, Glyceryl Polyacrylate, Sodium Citrate, Sea Water, Sucrose Palmitate, Tocopheryl Acetate, Hydroxyacetophenone, Polysorbate 60, Propanediol, Potassium Sorbate, Citric Acid, Isohexadecane, Polysorbate 80, Silica, Decyl Glucoside, Tromethamine, Ethylhexylglycerin, Phenoxyethanol, Disodium EDTA These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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). Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes. Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath. However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products. Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH. In skincare formulas, citric acid can: While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants. Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations. Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger. However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure. Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that: The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure. Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations. 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-i