Kiehl's Retinol Fast-Release Wrinkle Reducing Night Serum Versus Paula's Choice Clinical 0.3% Retinol + 2% Bakuchiol Treatment

Kiehl's Retinol Fast-Release Wrinkle Reducing Night Serum Versus Paula's Choice Clinical 0.3% Retinol + 2% Bakuchiol Treatment Detailed comparison of Kiehl's Retinol Fast-Release Wrinkle Reducing Night Serum versus Paula's Choice Clinical 0.3% Retinol + 2% Bakuchiol Treatment. This anti-aging serum is formulated around Retinol and Adenosine to soften the look of wrinkles and refine skin texture. This anti-aging treatment is formulated around Bakuchiol and Tetrahexyldecyl Ascorbate to soften the look of wrinkles and refine skin texture. Cellulose Acetate Butyrate Tricaprylin Retinol Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Silica Silylate Silica Magnesium Stearate Water Glycerin Propanediol Butylene Glycol Glycereth-26 Panthenol 1,2-Hexanediol Polyglycerin-3 C12-14 Pareth-12 Phenoxyethanol Caprylyl Glycol Ammonium Acryloyldimethyltaurate/Vp Copolymer Betaine Xanthan Gum Ethylhexylglycerin Adenosine Carbomer Glyceryl Acrylate/Acrylic Acid Copolymer Tromethamine Glycereth-25 PCA Isostearate T-Butyl Alcohol Tocopherol Cellulose Acetate Butyrate, Tricaprylin, Retinol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Silica Silylate, Silica, Magnesium Stearate, Water, Glycerin, Propanediol, Butylene Glycol, Glycereth-26, Panthenol, 1,2-Hexanediol, Polyglycerin-3, C12-14 Pareth-12, Phenoxyethanol, Caprylyl Glycol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Betaine, Xanthan Gum, Ethylhexylglycerin, Adenosine, Carbomer, Glyceryl Acrylate/Acrylic Acid Copolymer, Tromethamine, Glycereth-25 PCA Isostearate, T-Butyl Alcohol, Tocopherol Dimethicone Pentaerythrityl Tetraisostearate Isononyl Isononanoate Bakuchiol Arachidyl Alcohol Glyceryl Polymethacrylate Dimethicone Crosspolymer Behenyl Alcohol PEG-75 Shea Butter Glycerides Glyceryl Stearate C12-15 Alkyl Benzoate Polysorbate 20 Tetrahexyldecyl Ascorbate Ceramide Ng Palmitoyl Tetrapeptide-7 Palmitoyl Hexapeptide-12 Sodium Hyaluronate Dipotassium Glycyrrhizate Glycyrrhiza Glabra Root Extract Avena Sativa Kernel Extract Arctium Lappa Root Extract Salix Alba Bark Extract Glycine Soja Sterols Lecithin Allantoin Tocopheryl Acetate Hydrolyzed Soy Protein Palmitoyl Tripeptide-1 Sodium Hydroxide Tribehenin Dipeptide-2 Polygonum Cuspidatum Root Extract PEG-10 Phytosterol PEG-8 Magnesium Aluminum Silicate Arachidyl Glucoside Chrysin Pentylene Glycol Sodium Acrylates Copolymer Steareth-20 Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Cetearyl Alcohol Coco-Glucoside Hesperidin Methyl Chalcone N-Hydroxysuccinimide Disodium EDTA Benzoic Acid Water, Dimethicone, Pentaerythrityl Tetraisostearate, Isononyl Isononanoate, Butylene Glycol, Bakuchiol, Arachidyl Alcohol, Glyceryl Polymethacrylate, Dimethicone Crosspolymer, Behenyl Alcohol, Glycerin, PEG-75 Shea Butter Glycerides, Glyceryl Stearate, C12-15 Alkyl Benzoate, Polysorbate 20, Tetrahexyldecyl Ascorbate, Retinol, Ceramide Ng, Palmitoyl Tetrapeptide-7, Palmitoyl Hexapeptide-12, Sodium Hyaluronate, Dipotassium Glycyrrhizate, Glycyrrhiza Glabra Root Extract, Avena Sativa Kernel Extract, Arctium Lappa Root Extract, Salix Alba Bark Extract, Glycine Soja Sterols, Lecithin, Allantoin, Tocopheryl Acetate, Hydrolyzed Soy Protein, Palmitoyl Tripeptide-1, Sodium Hydroxide, Tribehenin, Caprylyl Glycol, Dipeptide-2, Polygonum Cuspidatum Root Extract, PEG-10 Phytosterol, PEG-8, Magnesium Aluminum Silicate, Arachidyl Glucoside, Chrysin, Pentylene Glycol, Sodium Acrylates Copolymer, Steareth-20, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cetearyl Alcohol, These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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). Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that: The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure. Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations. 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. 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 that it stays functional across a wide pH range (3-10). You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Pheno