PCA Skin Hyaluronic Acid Boosting Serum Versus The INKEY List Hyaluronic Acid Serum

PCA Skin Hyaluronic Acid Boosting Serum Versus The INKEY List Hyaluronic Acid Serum Detailed comparison of PCA Skin Hyaluronic Acid Boosting Serum versus The INKEY List Hyaluronic Acid Serum EU & Canada. This hydrating serum is formulated around Niacinamide and Sodium Hyaluronate to hydrate skin and strengthen the skin barrier. This hydrating serum is formulated around Sodium Hyaluronate and Hyaluronic Acid to hydrate skin and strengthen the skin barrier. Water Propanediol Glycerin Niacinamide Dimethicone Hydrolyzed Yeast Extract Polyglyceryl-3 Beeswax Coconut Alkanes Phenoxyethanol Isododecane Jojoba Esters Dimethicone Crosspolymer Polysilicone-11 Sodium Hyaluronate Sodium Benzoate Carbomer Xanthan Gum Hydrolyzed Hyaluronic Acid Cetyl Alcohol Polyglyceryl-6 Distearate Sodium Lauroyl Lactylate Disodium Acetyl Glucosamine Phosphate Hydrolyzed Glycosaminoglycans Ethylhexylglycerin Sodium Hydroxide Hexylene Glycol Polygonum Bistorta Root Extract Cetyl Hydroxyethylcellulose Rosmarinus Officinalis Leaf Oil Aroma Polyglucuronic Acid Ceramide NP Hyaluronic Acid Sodium Carrageenan Ceramide AP Phytosphingosine Caprylyl Glycol Cholesterol Lecithin Maris Sal Ceramide EOP Water, Propanediol, Glycerin, Niacinamide, Dimethicone, Hydrolyzed Yeast Extract, Polyglyceryl-3 Beeswax, Coconut Alkanes, Phenoxyethanol, Isododecane, Jojoba Esters, Dimethicone Crosspolymer, Polysilicone-11, Sodium Hyaluronate, Sodium Benzoate, Carbomer, Xanthan Gum, Hydrolyzed Hyaluronic Acid, Cetyl Alcohol, Polyglyceryl-6 Distearate, Sodium Lauroyl Lactylate, Disodium Acetyl Glucosamine Phosphate, Hydrolyzed Glycosaminoglycans, Ethylhexylglycerin, Sodium Hydroxide, Hexylene Glycol, Polygonum Bistorta Root Extract, Cetyl Hydroxyethylcellulose, Rosmarinus Officinalis Leaf Oil, Aroma, Polyglucuronic Acid, Ceramide NP, Hyaluronic Acid, Sodium Carrageenan, Ceramide AP, Phytosphingosine, Caprylyl Glycol, Cholesterol, Lecithin, Maris Sal, Ceramide EOP Butylene Glycol Ammonium Acryloyldimethyltaurate/Vp Copolymer Leuconostoc/Radish Root Ferment Filtrate Sodium Lactate Polysorbate 20 Palmitoyl Tetrapeptide-7 Palmitoyl Tripeptide-1 Water, Propanediol, Sodium Hyaluronate, Glycerin, Butylene Glycol, Phenoxyethanol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Leuconostoc/Radish Root Ferment Filtrate, Hyaluronic Acid, Carbomer, Sodium Lactate, Polysorbate 20, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1 These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture. Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%. It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier. Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%. A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions. 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. Hyaluronic acid (HA) is a glycosaminoglycan (basically a long sugar chain) that your skin already makes on its own. In your skin, HA lives in the extracellular matrix and acts as the body's moisture reservoir. Topically, HA is a humectant that binds water and helps skin look more plump, smooth, and hydrated. The only catch is that HA isn't a single thing; it actually comes in a wide range of molecular weights (~50 - 2,000+ kDA) and size matters. Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair. This is why the best HA serums blend the two sizes together so you get the best of both worlds. The majority of cosmetic HA is produced by bacterial fermentation, typically using Streptococcus or Bacillus strains. Typical use levels in skincare sit around 0.1-2%. A clinical study using a 0.2% low-molecular weight HA gel showed improvement in facial seborrheic dermatitis with excellent tolerance. These are some other common types of Hyaluronic Acid: 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 bacte