Kiehl's Ultra Facial Cream with Squalane Versus Paula's Choice Resist Barrier Repair Moisturizer with Retinol

Kiehl's Ultra Facial Cream with Squalane Versus Paula's Choice Resist Barrier Repair Moisturizer with Retinol Detailed comparison of Kiehl's Ultra Facial Cream with Squalane versus Paula's Choice Resist Barrier Repair Moisturizer with Retinol. This barrier-repair moisturizer is formulated around Squalane and Pseudoalteromonas Ferment Extract to strengthen the skin barrier and hydrate skin. This barrier-repair moisturizer is formulated around Retinol and Ceramide NP to strengthen the skin barrier and soften the look of wrinkles. Water Glycerin Dimethicone Squalane Bis-PEG-18 Methyl Ether Dimethyl Silane Sucrose Stearate Stearyl Alcohol PEG-8 Stearate Myristyl Myristate Prunus Armeniaca Kernel Oil Phenoxyethanol Persea Gratissima Oil Glyceryl Stearate Cetyl Alcohol Oryza Sativa Bran Oil Olea Europaea Fruit Oil Chlorphenesin Stearic Acid Palmitic Acid Carbomer Acrylates/C10-30 Alkyl Acrylate Crosspolymer Trisodium Ethylenediamine Disuccinate Prunus Amygdalus Dulcis Oil Xanthan Gum Ethylhexylglycerin Sodium Hydroxide Tocopherol Glycine Soja Oil Pseudoalteromonas Ferment Extract Myristic Acid Hydroxypalmitoyl Sphinganine Salicylic Acid Helianthus Annuus Seed Oil Rosmarinus Officinalis Leaf Extract Citric Acid Water, Glycerin, Dimethicone, Squalane, Bis-PEG-18 Methyl Ether Dimethyl Silane, Sucrose Stearate, Stearyl Alcohol, PEG-8 Stearate, Myristyl Myristate, Prunus Armeniaca Kernel Oil, Phenoxyethanol, Persea Gratissima Oil, Glyceryl Stearate, Cetyl Alcohol, Oryza Sativa Bran Oil, Olea Europaea Fruit Oil, Chlorphenesin, Stearic Acid, Palmitic Acid, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Trisodium Ethylenediamine Disuccinate, Prunus Amygdalus Dulcis Oil, Xanthan Gum, Ethylhexylglycerin, Sodium Hydroxide, Tocopherol, Glycine Soja Oil, Pseudoalteromonas Ferment Extract, Myristic Acid, Hydroxypalmitoyl Sphinganine, Salicylic Acid, Helianthus Annuus Seed Oil, Rosmarinus Officinalis Leaf Extract, Citric Acid Dicaprylyl Carbonate Ethylhexyl Stearate Cocoglycerides Butyrospermum Parkii Butter Sodium Polyacrylate Lecithin Adenosine Palmitoyl Tripeptide-1 Ceramide NP Retinol Punica Granatum Extract Camellia Oleifera Leaf Extract Glycyrrhiza Glabra Root Extract Tetrahydrodiferuloylmethane Tetrahydrodemethoxydiferuloylmethane Tetrahydrobisdemethoxydiferuloylmethane Tocopheryl Acetate Chamomilla Recutita Flower Extract Glycine Soja Seed Extract Butylene Glycol Propylene Glycol Glyceryl Polymethacrylate Water, Dicaprylyl Carbonate, Glycerin, Ethylhexyl Stearate, Cocoglycerides, Butyrospermum Parkii Butter, Squalane, Sodium Polyacrylate, Lecithin, Adenosine, Palmitoyl Tripeptide-1, Ceramide NP, Retinol, Punica Granatum Extract, Camellia Oleifera Leaf Extract, Glycyrrhiza Glabra Root Extract, Tetrahydrodiferuloylmethane, Tetrahydrodemethoxydiferuloylmethane, Tetrahydrobisdemethoxydiferuloylmethane, Tocopheryl Acetate, Chamomilla Recutita Flower Extract, Glycine Soja Seed Extract, Glycine Soja Oil, Butylene Glycol, Propylene Glycol, Glyceryl Polymethacrylate, Xanthan Gum, 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. 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. Glycine Soja Oil is a plant-derived oil from soybean seeds. Like other oils, it is rich in essential fatty acids (mostly linoleic and oleic) that support skin hydration and barrier function. The fatty acids are able to integrate into the lipid matrix of the stratum corneum to help soften skin and reduce water loss. On top of that, soybean oil is rich in vitamins like vitamin E, a potent antioxidant. Research on soybean's active components also point to anti-inflammatory, collagen-stimulating, antioxidant activity, and protection against UV-induced oxidative damage. Most of this research applies to the broader soybean plant and not just the oil fraction alone. This ingredient may not be fungal acne safe due to the oleic acid content. 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 r