Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The INKEY List Ceramide Serum Versus DR's Secret Moisturizer 6

The INKEY List Ceramide Serum Versus DR's Secret Moisturizer 6 Detailed comparison of The INKEY List Ceramide Serum versus DR's Secret Moisturizer 6. This barrier-repair treatment is formulated around Sodium Hyaluronate and Ceramide NP to strengthen the skin b

This source-based comparison does not add ratings or recommend a winner.

The INKEY List Ceramide Serum Versus DR's Secret Moisturizer 6 Detailed comparison of The INKEY List Ceramide Serum versus DR's Secret Moisturizer 6. This barrier-repair treatment is formulated around Sodium Hyaluronate and Ceramide NP to strengthen the skin barrier and hydrate skin. This hydrating treatment is formulated around Aloe Barbadensis Leaf Juice to 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 Aloe Barbadensis Leaf Juice Glyceryl Stearate Cetyl Alcohol Stearic Acid Phenyl Trimethicone Ethylhexyl Palmitate Sodium Lauryl Sulfate Sorbitol Tetrasodium EDTA Parfum Chlorphenesin Potassium Sorbate Water, Glycerin, Aloe Barbadensis Leaf Juice, Glyceryl Stearate, Cetyl Alcohol, Stearic Acid, Phenyl Trimethicone, Ethylhexyl Palmitate, Benzyl Alcohol, Sodium Lactate, Sodium Lauryl Sulfate, Sodium PCA, Sodium Hydroxide, Sorbitol, Tetrasodium EDTA, Proline, Sodium Hyaluronate, Parfum, Chlorphenesin, Potassium Sorbate, Dehydroacetic Acid These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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. Dehydroacetic Acid is a synthetic preservative that keeps your products safe from microbes. As an organic acid, it penetrates microbial cell walls and disrupts cellular metabolism. This makes it effective against bacteria, yeast, and mold. It is effective at low concentrations (<0.6%). Clinical studies have found it to be non-irritating, non-sensitizing, and non-photosensitizing. 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. Proline is a non-essential amino acid, meaning your body can make it on its own. In skincare, it is a skin conditioning ingredient that keeps skin soft and hydrated. It makes up about 23% of the collagen molecule (collagen is the protein responsible for keeping your skin firm) and is involved in your skin's natural hyaluronic acid production. When applied topically, proline can pene