ZO Skin Health Daily Power Defense Versus Paula's Choice Pro Retinaldehyde Dual-Retinoid Treatment

ZO Skin Health Daily Power Defense Versus Paula's Choice Pro Retinaldehyde Dual-Retinoid Treatment Detailed comparison of ZO Skin Health Daily Power Defense versus Paula's Choice Pro Retinaldehyde Dual-Retinoid Treatment. This barrier-repair moisturizer is formulated around Laminaria Digitata Extract and Beta-Glucan to strengthen the skin barrier and hydrate skin. This anti-aging treatment is formulated around Retinal and Oleyl Adapalenate to soften the look of wrinkles and refine skin texture. Water Dicaprylyl Carbonate Cetearyl Isononanoate Glycerin Pentylene Glycol Cetearyl Alcohol Steareth-20 Safflower Oil/Palm Oil Aminopropanediol Esters Laminaria Digitata Extract Opuntia Ficus-Indica Stem Extract Arabidopsis Thaliana Extract Marrubium Vulgare Meristem Cell Culture Leontopodium Alpinum Meristem Cell Culture Retinyl Palmitate Tocopheryl Acetate Tocopherol Micrococcus Lysate Caprylyl Glycol Hexylene Glycol Lactose Galactoarabinan Lecithin Schizophyllan Beta-Glucan 1,2-Hexanediol Carbomer Cellulose Maltodextrin C14-22 Alcohols Cetearyl Glucoside C12-20 Alkyl Glucoside Hydroxypropyl Methylcellulose Disodium EDTA Sodium Hydroxide Phenoxyethanol Ethylhexylglycerin Sodium Benzoate Parfum CI 77007 Limonene Water, Dicaprylyl Carbonate, Cetearyl Isononanoate, Glycerin, Pentylene Glycol, Cetearyl Alcohol, Steareth-20, Safflower Oil/Palm Oil Aminopropanediol Esters, Laminaria Digitata Extract, Opuntia Ficus-Indica Stem Extract, Arabidopsis Thaliana Extract, Marrubium Vulgare Meristem Cell Culture, Leontopodium Alpinum Meristem Cell Culture, Retinyl Palmitate, Tocopheryl Acetate, Tocopherol, Micrococcus Lysate, Caprylyl Glycol, Hexylene Glycol, Lactose, Galactoarabinan, Lecithin, Schizophyllan, Beta-Glucan, 1,2-Hexanediol, Carbomer, Cellulose, Maltodextrin, C14-22 Alcohols, Cetearyl Glucoside, C12-20 Alkyl Glucoside, Hydroxypropyl Methylcellulose, Disodium EDTA, Sodium Hydroxide, Phenoxyethanol, Ethylhexylglycerin, Sodium Benzoate, Parfum, CI 77007, Limonene Caprylic/Capric Triglyceride Simmondsia Chinensis Seed Oil Dimethicone Polyglyceryl-2 Stearate Propanediol Polyglyceryl-3 Diisostearate Sodium Stearoyl Glutamate Retinal Oleyl Adapalenate 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 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 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 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. 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 there. In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading. Concentrations usually range from 0.1-1% in most leave-on products. Tocopheryl Acetate is a stable, shelf-friendly form of vitamin E. Formulators love it because plain vitamin E oxidizes quickly once it hits air. This acetate version stays stable and resists going off, helping to extend a product's shelf life. It's actually inactive on its own and works like a slow-release "storage" form; the enzymes in your skin called esterases gradually convert it into active vitamin E over tim