Paula's Choice 1% Retinol Booster Versus CeraVe Skin Renewing Retinol Serum

Paula's Choice 1% Retinol Booster Versus CeraVe Skin Renewing Retinol Serum Detailed comparison of Paula's Choice 1% Retinol Booster versus CeraVe Skin Renewing Retinol Serum. This anti-aging treatment is formulated around Retinol and Ceramide NP to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Ceramide NP and Niacinamide to soften the look of wrinkles and refine skin texture. Water Glycerin Carthamus Tinctorius Seed Oil Polyglyceryl-10 Caprylate/Caprate Butylene Glycol Pyrus Malus Fruit Extract Polysorbate 20 Retinol Glycyrrhiza Glabra Root Ceramide NP Palmitoyl Tripeptide-1 Avena Sativa Kernel Extract Epilobium Angustifolium Extract Arctium Lappa Seed Oil Salix Alba Extract Allantoin Dipotassium Glycyrrhizate Caprylyl Glycol Polyglyceryl-10 Laurate Dipentaerythrityl Hexacaprylate/Hexacaprate Ethylhexyl Olivate Hydrogenated Lecithin Glyceryl Ascorbate Disodium EDTA Sorbic Acid Xanthan Gum Phenoxyethanol Water, Glycerin, Carthamus Tinctorius Seed Oil, Polyglyceryl-10 Caprylate/Caprate, Butylene Glycol, Pyrus Malus Fruit Extract, Polysorbate 20, Retinol, Glycyrrhiza Glabra Root, Ceramide NP, Palmitoyl Tripeptide-1, Avena Sativa Kernel Extract, Epilobium Angustifolium Extract, Arctium Lappa Seed Oil, Salix Alba Extract, Allantoin, Dipotassium Glycyrrhizate, Caprylyl Glycol, Polyglyceryl-10 Laurate, Dipentaerythrityl Hexacaprylate/Hexacaprate, Ethylhexyl Olivate, Hydrogenated Lecithin, Glyceryl Ascorbate, Disodium EDTA, Sorbic Acid, Xanthan Gum, Phenoxyethanol Caprylic/Capric Triglyceride Potassium Cetyl Phosphate Hydrogenated Palm Glycerides PEG-40 Stearate Cyclopentasiloxane Hydroxyethylcellulose Potassium Phosphate Ceramide AP Ceramide EOP Carbomer Niacinamide Isoceteth-10 Dimethicone/Vinyl Dimethicone Crosspolymer Triethanolamine Cetearyl Alcohol Behentrimonium Methosulfate Cichorium Intybus Root Extract Lecithin Silica Sodium Lauroyl Lactylate Cholesterol Tocopherol Alcohol Hydroxyacetophenone Citric Acid Hydrolyzed Hyaluronic Acid Pentylene Glycol Phytosphingosine Butyrospermum Parkii Butter Ethylhexylglycerin Water, Glycerin, Caprylic/Capric Triglyceride, Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides, Polysorbate 20, PEG-40 Stearate, Cyclopentasiloxane, Hydroxyethylcellulose, Potassium Phosphate, Ceramide NP, Ceramide AP, Ceramide EOP, Carbomer, Niacinamide, Isoceteth-10, Dimethicone/Vinyl Dimethicone Crosspolymer, Triethanolamine, Cetearyl Alcohol, Behentrimonium Methosulfate, Cichorium Intybus Root Extract, Lecithin, Retinol, Silica, Sodium Lauroyl Lactylate, Cholesterol, Phenoxyethanol, Tocopherol, Alcohol, Hydroxyacetophenone, Citric Acid, Hydrolyzed Hyaluronic Acid, Pentylene Glycol, Xanthan Gum, Phytosphingosine, Butyrospermum Parkii Butter, Ethylhexylglycerin 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. Ceramide NP (formerly known as Ceramide 3) is one of the skin's naturally occurring lipids. Since ceramides are the major lipid components of the skin, they are crucial for maintaining skin barrier and hydration. Ceramide NP most closely mirrors the dominant kind in human skin amongst ceramide subtypes. This ceramide works by slotting into gaps within the stratum corneum's lipid matrix to limit trans-epidermal water loss (TEWL) and shield the skin against external irritants. A study with 312 patients found that using a ceramide-containing routine for 4 weeks reduced the severity of atopic dermatitis by over 61%. Another clinical study in subjects aged 60 and older found that a ceramide body wash and moisturizer improved skin dryness and itchy skin in 15 days. Overall, ceramides are considered non-irritating and safety tests have found little to no observable adverse effects from using this ingredient. Ceramide NP is usually sourced from plants (like soybean or rice bran), or produced synthetically. 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 Phenoxyethanol concentration on its own. Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU. Safety-w