The INKEY List Collagen Peptide Serum Versus PSA SKIN Visible Improvement Peptides & Niacinamide Serum

The INKEY List Collagen Peptide Serum Versus PSA SKIN Visible Improvement Peptides & Niacinamide Serum Detailed comparison of The INKEY List Collagen Peptide Serum versus PSA SKIN Visible Improvement Peptides & Niacinamide Serum. This anti-aging serum is formulated around Palmitoyl Tetrapeptide-7 to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Niacinamide and Acetyl Glucosamine to soften the look of wrinkles and refine skin texture. Water Glycerin Butylene Glycol Propanediol Phenoxyethanol Hydroxyethylcellulose Sodium Phytate Citric Acid Leuconostoc/Radish Root Ferment Filtrate Carbomer Hyaluronic Acid Sodium Lactate Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine Palmitoyl Dipeptide-5 Diaminohydroxybutyrate Polysorbate 20 Polysorbate 60 Disodium Phosphate Sodium Phosphate Palmitoyl Tetrapeptide-7 Palmitoyl Tripeptide-1 Water, Glycerin, Butylene Glycol, Propanediol, Phenoxyethanol, Hydroxyethylcellulose, Sodium Phytate, Citric Acid, Leuconostoc/Radish Root Ferment Filtrate, Carbomer, Hyaluronic Acid, Sodium Lactate, Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine, Palmitoyl Dipeptide-5 Diaminohydroxybutyrate, Polysorbate 20, Polysorbate 60, Disodium Phosphate, Sodium Phosphate, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1 Niacinamide Ethyl Macadamiate Isodecyl Neopentanoate C12-15 Alkyl Benzoate Acetyl Glucosamine Beta-Glucan Saccharomyces/Xylinum/Black Tea Ferment Pichia/Resveratrol Ferment Extract Bisabolol Panthenol Tocopheryl Acetate Allantoin Ergothioneine Laminaria Digitata Extract Chlorella Vulgaris Extract Oxidized Glutathione Ubiquinone Tocopherol Dimethyl Sulfone Sea Water Dimethyl Isosorbide Palmitoyl Tripeptide-38 Malic Acid Sclerotium Gum Xanthan Gum Sodium Gluconate Ethylhexylglycerin Hydroxypropyl Cyclodextrin Saccharide Isomerate Potassium Sorbate Water, Niacinamide, Glycerin, Propanediol, Ethyl Macadamiate, Isodecyl Neopentanoate, Butylene Glycol, Polysorbate 20, C12-15 Alkyl Benzoate, Acetyl Glucosamine, Beta-Glucan, Saccharomyces/Xylinum/Black Tea Ferment, Pichia/Resveratrol Ferment Extract, Bisabolol, Panthenol, Tocopheryl Acetate, Allantoin, Ergothioneine, Laminaria Digitata Extract, Chlorella Vulgaris Extract, Oxidized Glutathione, Ubiquinone, Tocopherol, Dimethyl Sulfone, Sea Water, Dimethyl Isosorbide, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-38, Malic Acid, Sclerotium Gum, Xanthan Gum, Carbomer, Sodium Gluconate, Ethylhexylglycerin, Hydroxypropyl Cyclodextrin, Saccharide Isomerate, Hydroxyethylcellulose, Potassium Sorbate, Phenoxyethanol 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. Butylene Glycol (or BG) is used within cosmetic products for a few different reasons: Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients. Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness. 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. Hydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure. This ingredient helps stabilize products by preventing ingredients from separating. It can also help thicken the texture of a product. This ingredient can also be found in pill medicines to help our bodies digest other ingredients. Palmitoyl Tetrapeptide-7 (formerly Palmitoyl Tetrapeptide-3) is a synthetic peptide. Its main job is to fight what researchers call "inflammaging". "Inflammaging" is the slow, low-grade chronic inflammation that quietly breaks down collagen as we age. This ingredient calms down a specific inflammation signal in your skin cells (called IL-6). When left unchecked, this signal triggers enzymes that br