Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus Clinique Smart Night Clinical MD Multi-Dimensional Repair Treatment Retinol

Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus Clinique Smart Night Clinical MD Multi-Dimensional Repair Treatment Retinol Detailed comparison of Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide versus Clinique Smart Night Clinical MD Multi-Dimensional Repair Treatment Retinol. This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. This anti-aging treatment is formulated around Niacinamide and Retinol to soften the look of wrinkles and refine skin texture. Water Glycerin Butylene Glycol Pentylene Glycol Niacinamide Cetyl Alcohol Isohexadecane Isononyl Isononanoate Diisopropyl Sebacate 2-Oleamido-1,3-Octadecanediol 4-T-Butylcyclohexanol Acetyl Dipeptide-1 Cetyl Ester Adenosine Ceramide NP Hydroxypalmitoyl Sphinganine Lauroyl Lysine Octyldodecanol Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Sodium Chloride Sodium Hyaluronate Sodium Hydroxide Trisodium Ethylenediamine Disuccinate Retinol Tocopherol Dicaprylyl Ether Ammonium Polyacryloyldimethyl Taurate Behenyl Alcohol Caprylyl Glycol Carbomer Cetearyl Alcohol Cetearyl Glucoside Glycine Soja Oil Helianthus Annuus Seed Oil Hydroxyethylcellulose Lecithin Phenethyl Alcohol Poloxamer 188 Polycaprolactone Sorbitan Laurate Steareth-100 CI 40800 Chlorphenesin Phenoxyethanol Water, Glycerin, Butylene Glycol, Pentylene Glycol, Niacinamide, Cetyl Alcohol, Isohexadecane, Isononyl Isononanoate, Diisopropyl Sebacate, 2-Oleamido-1,3-Octadecanediol, 4-T-Butylcyclohexanol, Acetyl Dipeptide-1 Cetyl Ester, Adenosine, Ceramide NP, Hydroxypalmitoyl Sphinganine, Lauroyl Lysine, Octyldodecanol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Chloride, Sodium Hyaluronate, Sodium Hydroxide, Trisodium Ethylenediamine Disuccinate, Retinol, Tocopherol, Dicaprylyl Ether, Ammonium Polyacryloyldimethyl Taurate, Behenyl Alcohol, Caprylyl Glycol, Carbomer, Cetearyl Alcohol, Cetearyl Glucoside, Glycine Soja Oil, Helianthus Annuus Seed Oil, Hydroxyethylcellulose, Lecithin, Phenethyl Alcohol, Poloxamer 188, Polycaprolactone, Sorbitan Laurate, Steareth-100, CI 40800, Chlorphenesin, Phenoxyethanol Caprylic/Capric Triglyceride PPG-15 Stearyl Ether C12-20 Acid PEG-8 Ester Phenyl Trimethicone Caprylic/Capric/Myristic/Stearic Triglyceride Algae Extract Dimethicone Hydroxyethyl Urea Sigesbeckia Orientalis Extract Mangifera Indica Seed Butter Coffea Arabica Seed Oil Caffeine Ascorbic Acid Urea Squalane Trehalose Triticum Vulgare Germ Extract Tocopheryl Acetate PEG-100 Stearate Linoleic Acid Glyceryl Stearate Hordeum Vulgare Extract Acetyl Hexapeptide-8 Sorbitol Potassium Cetyl Phosphate Acrylates/C10-30 Alkyl Acrylate Crosspolymer Ammonium Acryloyldimethyltaurate/Vp Copolymer Sodium PCA Triacetin Polyquaternium-51 Xanthan Gum BHT Disodium EDTA Sodium Metabisulfite Potassium Sorbate Water, Caprylic/Capric Triglyceride, PPG-15 Stearyl Ether, C12-20 Acid PEG-8 Ester, Glycerin, Niacinamide, Phenyl Trimethicone, Caprylic/Capric/Myristic/Stearic Triglyceride, Algae Extract, Dimethicone, Hydroxyethyl Urea, Cetyl Alcohol, Retinol, Sigesbeckia Orientalis Extract, Mangifera Indica Seed Butter, Coffea Arabica Seed Oil, Sodium Hyaluronate, Caffeine, Ascorbic Acid, Urea, Butylene Glycol, Squalane, Trehalose, Triticum Vulgare Germ Extract, Tocopheryl Acetate, PEG-100 Stearate, Linoleic Acid, Glyceryl Stearate, Hordeum Vulgare Extract, Acetyl Hexapeptide-8, Sorbitol, Potassium Cetyl Phosphate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tocopherol, Ammonium Acryloyldimethyltaurate/ These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Behenyl Alcohol is a type of fatty alcohol (these are different from the drying, solvent alcohols). Fatty Alcohols have hydrating properties and are most often used as an emollient or to thicken a product. They are usually derived from natural fats and oils; behenyl alcohol is derived from the fats of vegetable oils. Emollients help keep your skin soft and hydrated by creating a film that traps moisture in. In 2000, Behenyl Alcohol was approved by the US as medicine to reduce the duration of cold sores. 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. Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created. Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin. Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on). 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. Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product. Its main roles are: Though it has "alcohol" in the name, it is not related to denatured alcohol or ethyl alcohol. The FDA allows products labeled "alcohol-free" to have fatty alcohols. This ingredient may not be fungal acne safe. It is a primary fatty alcohol with a chain length above 12 carbons. A study from 2019 show Malassezia can feed on fatty alcohols in this range, so it may trigger fungal acne in those prone to it. Chlorphenesin is a synthetic preservative. It helps protect a product against bacteria in order to extend shelf life. In most cases, Chlorphenesin is paired with other preservatives such as phenoxyethanol and caprylyl glycol. Chlorphenesin is a biocide. This means it is able to help fight the microorganisms on our skin. It is also able to fight odor-releasing bacteria. Chlorphenesi