Neutrogena Hydro Boost Hyaluronic Acid Serum Versus Neutrogena Hydro Boost+ Niacinamide Serum, Fragrance Free

Neutrogena Hydro Boost Hyaluronic Acid Serum Versus Neutrogena Hydro Boost+ Niacinamide Serum, Fragrance Free Detailed comparison of Neutrogena Hydro Boost Hyaluronic Acid Serum US versus Neutrogena Hydro Boost+ Niacinamide Serum, Fragrance Free. This hydrating serum is formulated around Panthenol and Sodium Hyaluronate to hydrate skin and strengthen the skin barrier. This brightening serum is formulated around Niacinamide and Acetyl Glucosamine to fade the look of dark spots and refine skin texture. Water Glycerin Butylene Glycol Panthenol Pentylene Glycol Phenoxyethanol Chlorphenesin Acrylates/C10-30 Alkyl Acrylate Crosspolymer Trehalose Xylitylglucoside Sodium Hyaluronate Anhydroxylitol Disodium EDTA Sodium Hydroxide Yeast Extract Xylitol Hydrolyzed Hyaluronic Acid Carrageenan Agar Potassium Chloride Xanthan Gum Ultramarines Titanium Dioxide Water, Glycerin, Butylene Glycol, Panthenol, Pentylene Glycol, Phenoxyethanol, Chlorphenesin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Trehalose, Xylitylglucoside, Sodium Hyaluronate, Anhydroxylitol, Disodium EDTA, Sodium Hydroxide, Yeast Extract, Xylitol, Hydrolyzed Hyaluronic Acid, Carrageenan, Agar, Potassium Chloride, Xanthan Gum, Ultramarines, Titanium Dioxide Niacinamide Acetyl Glucosamine Dimethicone Carbomer Ethylhexylglycerin Dimethicone/Vinyl Dimethicone Crosspolymer Amodimethicone Water, Niacinamide, Glycerin, Acetyl Glucosamine, Pentylene Glycol, Dimethicone, Phenoxyethanol, Carbomer, Disodium EDTA, Sodium Hyaluronate, Sodium Hydroxide, Ethylhexylglycerin, Dimethicone/Vinyl Dimethicone Crosspolymer, Amodimethicone These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air. This ingredient mainly works behind the scenes and helps with: On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it. One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin). Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption. You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%. 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. Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula: Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses. On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations. Typical use levels in a formula run about 1-5%. 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'l