Paula's Choice Rescue & Repair Weightless Moisturizer Versus La Roche-Posay Toleriane Double Repair Face Moisturizer

Paula's Choice Rescue & Repair Weightless Moisturizer Versus La Roche-Posay Toleriane Double Repair Face Moisturizer Detailed comparison of Paula's Choice Rescue & Repair Weightless Moisturizer versus La Roche-Posay Toleriane Double Repair Face Moisturizer. This barrier-repair moisturizer is formulated around Squalane and Allantoin to strengthen the skin barrier and calm redness. This barrier-repair moisturizer is formulated around Squalane and Niacinamide to strengthen the skin barrier and hydrate skin. Water Glycerin Caprylic/Capric Triglyceride Stearic Acid Triheptanoin C13-16 Isoalkane Butylene Glycol Propanediol Inulin Glyceryl Stearate Acrylates/C10-30 Alkyl Acrylate Crosspolymer Squalane Ethylhexyl Stearate Sodium Hydroxide Caprylyl Glycol Allantoin Sodium Phytate Ethylhexylglycerin Hexylene Glycol Alpha-Glucan Oligosaccharide Glycogen Laminaria Digitata Extract Albatrellus Confluens Extract Opuntia Ficus-Indica Stem Extract Galactoarabinan Citric Acid Maltodextrin Schizophyllan Acetyl Hexapeptide-8 Phenoxyethanol Potassium Sorbate Water, Glycerin, Caprylic/Capric Triglyceride, Stearic Acid, Triheptanoin, C13-16 Isoalkane, Butylene Glycol, Propanediol, Inulin, Glyceryl Stearate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Squalane, Ethylhexyl Stearate, Sodium Hydroxide, Caprylyl Glycol, Allantoin, Sodium Phytate, Ethylhexylglycerin, Hexylene Glycol, Alpha-Glucan Oligosaccharide, Glycogen, Laminaria Digitata Extract, Albatrellus Confluens Extract, Opuntia Ficus-Indica Stem Extract, Galactoarabinan, Citric Acid, Maltodextrin, Schizophyllan, Acetyl Hexapeptide-8, Phenoxyethanol, Potassium Sorbate Dimethicone Zea Mays Starch Niacinamide Ammonium Polyacryloyldimethyl Taurate Myristyl Myristate Ceramide NP Potassium Cetyl Phosphate Glyceryl Stearate Se Myristic Acid Palmitic Acid Capryloyl Glycine Xanthan Gum Water, Glycerin, Squalane, Dimethicone, Zea Mays Starch, Niacinamide, Ammonium Polyacryloyldimethyl Taurate, Myristyl Myristate, Stearic Acid, Ceramide NP, Potassium Cetyl Phosphate, Glyceryl Stearate Se, Sodium Hydroxide, Myristic Acid, Palmitic Acid, Capryloyl Glycine, Caprylyl Glycol, Xanthan Gum These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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). 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. Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective. In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline. Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated. "Alkaline" refers to a high pH level. A low pH level would be considered acidic. Squalane is the hydrogenated and shelf-stable form of squalene (a lipid that naturally occurs in human sebum). It is an emollient and skin conditioning agent that is able to integrate seamlessly into the skin's lipid barrier without clogging pores. This is due to how structurally similar it is to what your skin already produces. Though it is mostly an emollient that helps soften and hydrate skin, it also has some humectant and occlusive action. Humectants help the skin retain moisture while occlusives seal it in, making squalane a triple-threat moisturizer. Research shows it has antioxidant capabilities that help protect against stressors like UV exposure, specifically UVA induced oxidative stress. This study also found that it supports collagen biosynthesis in human dermal fibroblasts. No clinical study has reported significant adverse effects and irritation reactions are very rare from this ingredient (even at 100% concentration). Overall, it's a fantastic ingredient for hydration and is suitable for all skin types. This depend