No7 Pure Retinol Night Cream Versus The INKEY List Ceramide Serum

No7 Pure Retinol Night Cream Versus The INKEY List Ceramide Serum Detailed comparison of No7 Pure Retinol Night Cream versus The INKEY List Ceramide Serum. This anti-aging night moisturizer is formulated around Retinol and Palmitoyl Tripeptide-1 to soften the look of wrinkles and refine skin texture. This barrier-repair treatment is formulated around Sodium Hyaluronate and Ceramide NP to strengthen the skin barrier and hydrate skin. Water Glycerin C12-15 Alkyl Benzoate Cetearyl Alcohol Steareth-21 Caprylic/Capric Triglyceride Dimethicone Butyrospermum Parkii Butter Steareth-2 Glyceryl Stearate Polyacrylamide Alcohol Denat. Butylene Glycol C13-14 Isoparaffin Phenoxyethanol Panthenol Caprylyl Glycol Laureth-7 Sodium Benzoate Bisabolol Ethylhexylglycerin Citric Acid Tetrasodium EDTA Polysorbate 20 Sorbitan Laurate Sodium Lauroyl Lactylate Retinol Carbomer Inulin Lauryl Carbamate Hydroxyethylcellulose Acetyl Dipeptide-1 Cetyl Ester Sucrose Laurate Behentrimonium Chloride Ceramide NP Phytosphingosine Ceramide AP Cholesterol Xanthan Gum Benzoic Acid Palmitoyl Tripeptide-1 Palmitoyl Tetrapeptide-7 Benzyl Alcohol Ceramide EOP Water, Glycerin, C12-15 Alkyl Benzoate, Cetearyl Alcohol, Steareth-21, Caprylic/Capric Triglyceride, Dimethicone, Butyrospermum Parkii Butter, Steareth-2, Glyceryl Stearate, Polyacrylamide, Alcohol Denat., Butylene Glycol, C13-14 Isoparaffin, Phenoxyethanol, Panthenol, Caprylyl Glycol, Laureth-7, Sodium Benzoate, Bisabolol, Ethylhexylglycerin, Citric Acid, Tetrasodium EDTA, Polysorbate 20, Sorbitan Laurate, Sodium Lauroyl Lactylate, Retinol, Carbomer, Inulin Lauryl Carbamate, Hydroxyethylcellulose, Acetyl Dipeptide-1 Cetyl Ester, Sucrose Laurate, Behentrimonium Chloride, Ceramide NP, Phytosphingosine, Ceramide AP, Cholesterol, Xanthan Gum, Benzoic Acid, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Benzyl Alcohol, Ceramide EOP Sodium Hyaluronate Simmondsia Chinensis Seed Oil Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Squalane Sodium PCA Sodium Hydroxide Sodium Stearoyl Glutamate Sodium Lactate Arginine Aspartic Acid Sodium Gluconate PCA Polysorbate 60 Dehydroacetic Acid Glycine Alanine Sorbitan Isostearate Serine Valine Isoleucine Proline Threonine Histidine Phenylalanine 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. 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. 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. Ceramide AP is is a skin-identical lipid that mimics what your skin already makes naturally. Ceramides help maintain epidermal integrity and barrier function. You'll often see this ingredient paired with other ceramides (like ceramide NP), cholesterol, or fatty acids because this combination best mimics the natural lipid mix your skin already has. The skin's ability to produce ceramides gets disrupted in skin conditions like eczema. This in turn weakens the skin barrier and applying ceramides topically has been shown to replenish what's been lost to restore barrier function. Most of the studies with Ceramide