Naturium Retinol Complex Serum Versus Paula's Choice Resist Intensive Wrinkle-Repair Retinol Serum

Naturium Retinol Complex Serum Versus Paula's Choice Resist Intensive Wrinkle-Repair Retinol Serum Detailed comparison of Naturium Retinol Complex Serum versus Paula's Choice Resist Intensive Wrinkle-Repair Retinol Serum. This anti-aging serum is formulated around Retinol and Bakuchiol to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Retinol and Tetrahexyldecyl Ascorbate to soften the look of wrinkles and refine skin texture. Water Propanediol Astrocaryum Murumuru Seed Butter Gossypium Herbaceum Fruit Water Retinol Glycerin Bakuchiol Bidens Pilosa Extract Linum Usitatissimum Seed Oil Humulus Lupulus Extract Sodium Hyaluronate Tocopherol Caprylyl Glycol Helianthus Annuus Seed Oil Copernicia Cerifera Wax Phenoxyethanol Carbomer Potassium Sorbate Xanthan Gum Disodium Cocoamphodiacetate Hexylene Glycol Citric Acid Sodium Hydroxide Polysorbate 20 Glyceryl Polyacrylate 1,2-Hexanediol Ethyl Ferulate Water, Propanediol, Astrocaryum Murumuru Seed Butter, Gossypium Herbaceum Fruit Water, Retinol, Glycerin, Bakuchiol, Bidens Pilosa Extract, Linum Usitatissimum Seed Oil, Humulus Lupulus Extract, Sodium Hyaluronate, Tocopherol, Caprylyl Glycol, Helianthus Annuus Seed Oil, Copernicia Cerifera Wax, Phenoxyethanol, Carbomer, Potassium Sorbate, Xanthan Gum, Disodium Cocoamphodiacetate, Hexylene Glycol, Citric Acid, Sodium Hydroxide, Polysorbate 20, Glyceryl Polyacrylate, 1,2-Hexanediol, Ethyl Ferulate Cyclopentasiloxane Dimethiconol Neopentyl Glycol Diheptanoate Dicaprylyl Carbonate Caprylic/Capric Triglyceride Phenyl Trimethicone Squalane Bisabolol Tetrahexyldecyl Ascorbate Tocotrienols Lecithin Laminaria Ochroleuca Extract Avena Sativa Kernel Extract Elaeis Guineensis Oil Stearyl Glycyrrhetinate Ethylhexylglycerin Cyclopentasiloxane, Dimethiconol, Neopentyl Glycol Diheptanoate, Dicaprylyl Carbonate, Caprylic/Capric Triglyceride, Phenyl Trimethicone, Squalane, Bisabolol, Tetrahexyldecyl Ascorbate, Retinol, Tocotrienols, Tocopherol, Lecithin, Laminaria Ochroleuca Extract, Avena Sativa Kernel Extract, Elaeis Guineensis Oil, Stearyl Glycyrrhetinate, Hexylene Glycol, Caprylyl Glycol, Ethylhexylglycerin, Phenoxyethanol 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. 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). Hexylene Glycol is a multitasker ingredient that works as a solvent, humectant, emulsifier, viscosity reducer, and preservative booster. It is able to dissolve both water and oil-soluble ingredients to stabilize tricky actives and make products spread more easily. As a humectant, it pulls water into the skin. But it's a pretty minor moisturizing ingredient compared to other humectants, like glycerin. Interestingly, it can act as a mild penetration enhancer. One in vitro study on human skin found a 12% concentration upped the absorption of mometasone furoate (a medicinal ingredient used to treat inflammatory skin conditions) up to 7%. This ingredient is typically used at levels of 0.1-10% depending on the role it's playing. A patch test study on eczema patients didn't find a significant increase in irritation versus the control group, but the potential for irritation rises at higher concentrations. 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-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages. Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon. Retinol is one of the most studied anti-aging ingredients in skincare (and for good reason!). It's a form of vitamin A that your skin converts into Retinoic Acid, the active molecule that actually does the work in your cells. That