Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The INKEY List Ceramide Night Treatment Versus Naturium Multi-Peptide Advanced Serum

The INKEY List Ceramide Night Treatment Versus Naturium Multi-Peptide Advanced Serum Detailed comparison of The INKEY List Ceramide Night Treatment versus Naturium Multi-Peptide Advanced Serum. This barrier-repair night moisturizer is formulated around Sodium

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The INKEY List Ceramide Night Treatment Versus Naturium Multi-Peptide Advanced Serum Detailed comparison of The INKEY List Ceramide Night Treatment versus Naturium Multi-Peptide Advanced Serum. This barrier-repair night moisturizer is formulated around Sodium Hyaluronate and Ceramide NP to strengthen the skin barrier and hydrate skin. This anti-aging serum is formulated around Acetyl Hexapeptide-8 and Ferulic Acid to soften the look of wrinkles. Water Butylene Glycol Glycerin Sodium Hyaluronate Simmondsia Chinensis Seed Oil Carbomer Phenoxyethanol Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Benzyl Alcohol Squalane Sodium Lauroyl Lactylate Sodium PCA Sodium Hydroxide Sodium Stearoyl Glutamate Sodium Lactate Arginine Aspartic Acid Ethylhexylglycerin Sodium Gluconate PCA Polysorbate 60 Dehydroacetic Acid Ceramide NP Glycine Alanine Sorbitan Isostearate Ceramide AP Phytosphingosine Serine Cholesterol Valine Xanthan Gum Isoleucine Proline Threonine Histidine Phenylalanine Ceramide EOP Water, Butylene Glycol, Glycerin, Sodium Hyaluronate, Simmondsia Chinensis Seed Oil, Carbomer, Phenoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Benzyl Alcohol, Squalane, Sodium Lauroyl Lactylate, Sodium PCA, Sodium Hydroxide, Sodium Stearoyl Glutamate, Sodium Lactate, Arginine, Aspartic Acid, Ethylhexylglycerin, Sodium Gluconate, PCA, Polysorbate 60, Dehydroacetic Acid, Ceramide NP, Glycine, Alanine, Sorbitan Isostearate, Ceramide AP, Phytosphingosine, Serine, Cholesterol, Valine, Xanthan Gum, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Ceramide EOP Propanediol Caprylic/Capric Triglyceride Isopentyldiol Ethylhexyl Polyhydroxystearate Tetradecane Glyceryl Stearate Citrate Butyrospermum Parkii Butter Polyglyceryl-3 Stearate Helianthus Annuus Extract Oryza Sativa Bran Extract Mannitol Phosphatidylcholine Ferulic Acid Acetyl Hexapeptide-8 Copper Palmitoyl Heptapeptide-14 Palmitoyl Sh-Heptapeptide-12 Sp Hydrolyzed Collagen Rosmarinus Officinalis Leaf Extract Lactic Acid/Glycolic Acid Copolymer Tocopherol Pullulan Lysolecithin Sclerotium Gum Dimethicone Sodium Phytate Diglycerin Hydrogenated Lecithin Silica Cetyl Alcohol Hydroxyacetophenone Sodium Benzoate Potassium Sorbate Polyvinyl Alcohol Decyl Glucoside Tocopheryl Acetate Sodium Chloride Citric Acid Water, Propanediol, Caprylic/Capric Triglyceride, Isopentyldiol, Ethylhexyl Polyhydroxystearate, Squalane, Tetradecane, Glyceryl Stearate Citrate, Butyrospermum Parkii Butter, Polyglyceryl-3 Stearate, Helianthus Annuus Extract, Oryza Sativa Bran Extract, Mannitol, Phosphatidylcholine, Ferulic Acid, Arginine, Acetyl Hexapeptide-8, Copper Palmitoyl Heptapeptide-14, Palmitoyl Sh-Heptapeptide-12 Sp, Hydrolyzed Collagen, Rosmarinus Officinalis Leaf Extract, Lactic Acid/Glycolic Acid Copolymer, Glycerin, Tocopherol, Pullulan, Lysolecithin, Sclerotium Gum, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Dimethicone, Sodium Phytate, Diglycerin, Hydrogenated Lecithin, Silica, Cetyl Alcohol, Hydroxyacetophenone, Polysorbate 60, Sorbitan Isostearate, Sodium Hydroxide, Sodium Benzoate, Potassium Sorbate, Polyvinyl Alcohol, Decyl Glucoside, Xanthan Gum, Tocopheryl Acetate, Sodium Chloride, Citric Acid, 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. Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources. It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy. Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces. A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks. Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis. One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies. Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne. 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. This is a synthetic polymer. It helps improve the texture of products by adding thickness and gel-like feel. It is also an emulsifer, meaning it prevents ingredients such as oil and water from separating. It also helps evenly disperse other ingredients. 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 tha