Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The INKEY List Ceramide Night Treatment Versus The INKEY List Ceramide Serum

The INKEY List Ceramide Night Treatment Versus The INKEY List Ceramide Serum Detailed comparison of The INKEY List Ceramide Night Treatment versus The INKEY List Ceramide Serum. This barrier-repair night moisturizer is formulated around Sodium Hyaluronate and

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The INKEY List Ceramide Night Treatment Versus The INKEY List Ceramide Serum Detailed comparison of The INKEY List Ceramide Night Treatment versus The INKEY List Ceramide Serum. This barrier-repair night moisturizer is formulated around Sodium Hyaluronate and Ceramide NP to strengthen the skin barrier and hydrate skin. This barrier-repair treatment is formulated around Sodium Hyaluronate and Ceramide NP to strengthen the skin barrier and hydrate skin. 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 These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Alanine is an amino acid and is already found in the human body. Our skin uses alanine to build collagen, elastin, and keratin. 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. Aspartic Acid is an amino acid that our bodies produce naturally. It is an antioxidant. Our body uses Aspartic Acid to help build collagen and elastin. It also plays a role in hydrating skin. Benzyl Alcohol is an aromatic alcohol with several roles: it's a preservative, solvent, and mild fragrance component with a floral scent. This ingredient has been deemed safe for use in cosmetic formulations at concentrations up to 5%, and up to 10% in hair dyes. You'll typically see 0.5-2% in most rinse-off or leave-on products. As a preservative, it works by disrupting the membrane of microbial proteins. This helps keep bacteria and fungi from growing in your products. The sensitization picture is actually quite assuring as well:of nearly 71,000 patients patch tested with benzyl alcohol, only 0.21% showed a positive reaction with most of them being weakly positive. This led researchers to conclude that benzyl alcohol cannot be regarded as a significant contact allergen. It is worth noting this ingredient is classified as one of the EU's regulated fragrance allergens and restricted to 1% in finished products. Labels must also declare it in concentrations above 0.001% in leave-on products and 0.01% in rinse-off products. At concentrations around 5%, localized redness and itching can appear as a direct irritant response and not as a true allergic reaction. 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. Thoug