FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1 Versus Paula's Choice Resist Intensive Repair Cream

FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1 Versus Paula's Choice Resist Intensive Repair Cream Detailed comparison of FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1 versus Paula's Choice Resist Intensive Repair Cream. This brightening serum is formulated around Retinyl Palmitate and Sodium Ascorbyl Phosphate to brighten dull-looking skin. This anti-aging moisturizer is formulated around Retinol and Simmondsia Chinensis Seed Oil to soften the look of wrinkles and hydrate skin. Water Propanediol Glycerin Polyglyceryl-4 Oleate Retinyl Palmitate Sodium Ascorbyl Phosphate Polyglyceryl-6 Stearate Tocopherol Sodium Anisate Sodium Levulinate Glyceryl Caprylate Anethum Graveolens Herb Extract Glycyrrhiza Glabra Root Extract Cetyl Hydroxyethylcellulose Lactic Acid Polyglyceryl-6 Behenate Ferulic Acid Xanthan Gum Salicylic Acid Sodium Hyaluronate Aloe Barbadensis Leaf Juice Citric Acid Potassium Sorbate Water, Propanediol, Glycerin, Polyglyceryl-4 Oleate, Retinyl Palmitate, Sodium Ascorbyl Phosphate, Polyglyceryl-6 Stearate, Tocopherol, Sodium Anisate, Sodium Levulinate, Glyceryl Caprylate, Anethum Graveolens Herb Extract, Glycyrrhiza Glabra Root Extract, Cetyl Hydroxyethylcellulose, Lactic Acid, Polyglyceryl-6 Behenate, Ferulic Acid, Xanthan Gum, Salicylic Acid, Sodium Hyaluronate, Aloe Barbadensis Leaf Juice, Citric Acid, Potassium Sorbate Ethylhexyl Stearate Simmondsia Chinensis Seed Oil Butylene Glycol Caprylic/Capric Triglyceride Petrolatum Cetearyl Alcohol Dimethicone Dipentaerythrityl Hexacaprylate/Hexacaprate Glyceryl Stearate Tridecyl Trimellitate PEG-100 Stearate Phenyl Trimethicone Retinol Adenosine Palmitoyl Tetrapeptide-7 Palmitoyl Hexapeptide-12 Palmitoyl Tripeptide-1 Ceramide Ng Magnesium Ascorbyl Phosphate Niacinamide Lecithin Linoleic Acid Linolenic Acid Camellia Oleifera Leaf Extract Citrullus Lanatus Fruit Extract Lens Esculenta Fruit Extract Pyrus Malus Fruit Extract Glycine Soja Sterols Tribehenin PEG-10 Phytosterol Magnesium Aluminum Silicate Sodium PCA Sodium Lactate Pullulan Sodium Hydroxide Neopentyl Glycol Dicaprylate/Dicaprate Cetearyl Glucoside Tridecyl Stearate Behenyl Alcohol Sclerotium Gum Carbomer C12-15 Alkyl Benzoate Polysorbate 20 Disodium EDTA Sorbic Acid Phenoxyethanol Chlorphenesin Benzoic Acid Water, Ethylhexyl Stearate, Simmondsia Chinensis Seed Oil, Butylene Glycol, Glycerin, Caprylic/Capric Triglyceride, Petrolatum, Cetearyl Alcohol, Dimethicone, Dipentaerythrityl Hexacaprylate/Hexacaprate, Glyceryl Stearate, Tridecyl Trimellitate, PEG-100 Stearate, Phenyl Trimethicone, Retinol, Adenosine, Palmitoyl Tetrapeptide-7, Palmitoyl Hexapeptide-12, Palmitoyl Tripeptide-1, Ceramide Ng, Sodium Hyaluronate, Magnesium Ascorbyl Phosphate, Niacinamide, Tocopherol, Lecithin, Linoleic Acid, Linolenic Acid, Retinyl Palmitate, Glycyrrhiza Glabra Root Extract, Camellia Oleifera Leaf Extract, Citrullus Lanatus Fruit Extract, Lens Esculenta Fruit Extract, Pyrus Malus Fruit Extract, Glycine Soja Sterols, Tribehenin, PEG-10 Phytosterol, Magnesium Aluminum Silicate, Sodium PCA, Sodium Lactate, Pullulan, Xanthan Gum, Sodium Hydroxide, Neopentyl Glycol Dicaprylate/Dicaprate, Cetearyl Glucoside, Tridecyl Stearate, Behenyl Alcohol, Sclerotium Gum, Carbomer, C12-15 Alkyl Benzoate, Polysorbate 20, Disodium EDTA, Sorbic Acid, Phenoxyethanol, Chlorphenesin, Benzoic Acid 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. Glycyrrhiza Glabra Root Extract is an extract of the roots of Licorice. It has been found to have several benefits such as skin hydrating, conditioning, and soothing. One component, glabridin, has extra potent antioxidant and soothing properties. It has also been found to block pigmentation from UVB rays in guinea pigs. Licorice Root also contains a flavonoid. Flavonoids are a natural substance from in plants. Flavonoids also have antioxidant properties. Another component, glycyrrhizin, has been found to have anti-inflammatory and antimicrobial benefits. This may make licorice root extract effective at treating acne. However, more research is needed to support this. Liquiritin is one of the flavone compounds found in licorice. It has been found to help lighten skin by preventing tyrosinase from reacting with tyrosine. When the two react, protein is converted to melanin. Melanin is the substance in your body that gives your features pigmentation. Retinyl Palmitate is a form of retinoid. Retinoids are the superstar class of anti-aging ingredients that include Tretinoin and Retinol. This particular ingredient has had a bumpy year with its rise and fall in popularity. First, Retinyl Palmitate is created from Palmitic Acid and Retinol. It is a Retinol ester and considered one of the weaker forms of retinoid. This is because all retinoids have to be converted to Tretinoin, AKA Retinoic Acid. Retinyl Palmitate is pretty far down the line and has to go through multiple conversions before its effects are seen. Once it's on your skin, enzymes called esterases convert it into Retinol, then into Retinal, and finally into Retinoic Acid; that's three steps with a little lost at each one. The benefits of Retinyl Palmitate are debated due to this long and ineffective conversion line. So why use it at all? The answer is stability. Retinol and Retinoic Acid break down fast when they hit light, heat, and air, and Retinoic Acid