Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum Versus Paula's Choice Pro Retinaldehyde Dual-Retinoid Treatment

Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum Versus Paula's Choice Pro Retinaldehyde Dual-Retinoid Treatment Detailed comparison of Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum versus Paula's Choice Pro Retinaldehyde Dual-Retinoid Treatment. This anti-aging serum is formulated around Panthenol and Adenosine to soften the look of wrinkles and fade the look of dark spots. This anti-aging treatment is formulated around Retinal and Oleyl Adapalenate to soften the look of wrinkles and refine skin texture. 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 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 Caprylic/Capric Triglyceride Simmondsia Chinensis Seed Oil Dimethicone Polyglyceryl-2 Stearate Polyglyceryl-3 Diisostearate Sodium Stearoyl Glutamate Retinal Oleyl Adapalenate Tocopheryl Acetate Saccharomyces Ferment Filtrate Albatrellus Confluens Extract Punica Granatum Pericarp Extract Glyceryl Stearate Stearyl Alcohol Hydroxyapatite Cetyl Glyceryl Ether Ricinus Communis Seed Oil Sodium Polyacrylate Isopropyl Myristate Hydroxyacetophenone Caprylhydroxamic Acid Sodium Phytate Hydroxystearic Acid Ceramide AP Sorbitan Oleate Naringin Citric Acid Titanium Dioxide Water, Caprylic/Capric Triglyceride, Simmondsia Chinensis Seed Oil, Dimethicone, Polyglyceryl-2 Stearate, Propanediol, Polyglyceryl-3 Diisostearate, Sodium Stearoyl Glutamate, Retinal, Oleyl Adapalenate, Tocopherol, Tocopheryl Acetate, Saccharomyces Ferment Filtrate, Albatrellus Confluens Extract, Punica Granatum Pericarp Extract, Glyceryl Stearate, Stearyl Alcohol, Hydroxyapatite, Butylene Glycol, Cetyl Glyceryl Ether, Ricinus Communis Seed Oil, Sodium Polyacrylate, Isopropyl Myristate, Hydroxyacetophenone, Caprylhydroxamic Acid, Sodium Phytate, Xanthan Gum, Glycerin, Hydroxystearic Acid, Ceramide AP, 1,2-Hexanediol, Sorbitan Oleate, Naringin, Citric Acid, Titanium Dioxide Be the first to review These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse. It is a: Humectant, drawing moisture into the skin Emollient, helping to soften skin Solvent, dispersing and stabilizing formulas Preservative booster, enhancing the antimicrobial activity of other preservatives 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. 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. Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin. It’s often used to: Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent. Tocopherol is a fat-soluble antioxidant known as Vitamin E. You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells. Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes. It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks. This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage. This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out t