Estée Lauder Perfectionist Pro Serum Rapid Brightening Treatment with Ferment² + Vitamin C Versus Dr. Dennis Gross Skincare C+ Collagen Brighten & Firm Vitamin C Serum

Estée Lauder Perfectionist Pro Serum Rapid Brightening Treatment with Ferment² + Vitamin C Versus Dr. Dennis Gross Skincare C+ Collagen Brighten & Firm Vitamin C Serum Detailed comparison of Estée Lauder Perfectionist Pro Serum Rapid Brightening Treatment with Ferment² + Vitamin C versus Dr. Dennis Gross Skincare C+ Collagen Brighten & Firm Vitamin C Serum. This brightening serum is formulated around Ascorbyl Glucoside and Acetyl Glucosamine to brighten dull-looking skin and fade the look of dark spots. This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Niacinamide to brighten dull-looking skin and soften the look of wrinkles. Water Butylene Glycol Glycerin Glycereth-26 Isononyl Isononanoate Dimethicone Propanediol Ascorbyl Glucoside Algae Extract Sucrose Acetyl Glucosamine Hydroxyethyl Urea Lens Esculenta Fruit Extract Citrullus Lanatus Fruit Extract Pyrus Malus Fruit Extract Molasses Extract Myrtus Communis Leaf Extract Avena Sativa Kernel Extract Triticum Vulgare Germ Extract Hordeum Vulgare Extract Cladosiphon Okamuranus Extract Salicylic Acid Hydrolyzed Prunus Domestica Caffeine Sodium Lactate Dipotassium Glycyrrhizate Squalane Oryzanol Resveratrol Sodium Hyaluronate Sodium PCA Ethylhexylglycerin Bis-PEG-18 Methyl Ether Dimethyl Silane Tocopheryl Acetate PEG-75 Oleth-3 Phosphate Sorbitol Caprylyl Glycol Oleth-3 Sodium Polyaspartate Oleth-5 Acrylates/C10-30 Alkyl Acrylate Crosspolymer Propylene Glycol Caprylate Dextrin Faex Extract Choleth-24 Carbomer Sodium Hydroxide Ceteth-24 Xanthan Gum Parfum Glyceryl Acrylate/Acrylic Acid Copolymer Citric Acid Sodium Citrate Disodium EDTA BHT Potassium Sorbate Sodium Benzoate Phenoxyethanol Water, Butylene Glycol, Glycerin, Glycereth-26, Isononyl Isononanoate, Dimethicone, Propanediol, Ascorbyl Glucoside, Algae Extract, Sucrose, Acetyl Glucosamine, Hydroxyethyl Urea, Lens Esculenta Fruit Extract, Citrullus Lanatus Fruit Extract, Pyrus Malus Fruit Extract, Molasses Extract, Myrtus Communis Leaf Extract, Avena Sativa Kernel Extract, Triticum Vulgare Germ Extract, Hordeum Vulgare Extract, Cladosiphon Okamuranus Extract, Salicylic Acid, Hydrolyzed Prunus Domestica, Caffeine, Sodium Lactate, Dipotassium Glycyrrhizate, Squalane, Oryzanol, Resveratrol, Sodium Hyaluronate, Sodium PCA, Ethylhexylglycerin, Bis-PEG-18 Methyl Ether Dimethyl Silane, Tocopheryl Acetate, PEG-75, Oleth-3 Phosphate, Sorbitol, Caprylyl Glycol, Oleth-3, Sodium Polyaspartate, Oleth-5, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Propylene Glycol Caprylate, Dextrin, Faex Extract, Choleth-24, Carbomer, Sodium Hydroxide, Ceteth-24, Xanthan Gum, Parfum, Glyceryl Acrylate/Acrylic Acid Copolymer, Citric Acid, Sodium Citrate, Disodium EDTA, BHT, Potassium Sorbate, Sodium Benzoate, Phenoxyethanol 3-O-Ethyl Ascorbic Acid Niacinamide Glycereth-7 Triacetate Lactic Acid Sd Alcohol 40-B Hydroxyethylcellulose Dimethyl Isosorbide Ascorbic Acid Collagen Amino Acids Superoxide Dismutase Glycine Carnitine Hcl Ubiquinone Hexylresorcinol Emblica Officinalis Fruit Extract Hydrolyzed Soy Protein Tetrahexyldecyl Ascorbate Isoquercetin Mandelic Acid Pueraria Lobata Root Extract Curcuma Longa Root Extract Phytic Acid Tetrasodium EDTA Polysorbate 20 T-Butyl Alcohol Polysorbate 80 Denatonium Benzoate Benzyl Alcohol Water, Glycerin, 3-O-Ethyl Ascorbic Acid, Niacinamide, Glycereth-7 Triacetate, Lactic Acid, Sd Alcohol 40-B, Hydroxyethylcellulose, Dimethyl Isosorbide, Ascorbic Acid, Collagen Amino Acids, Superoxide Dismutase, Glycine, Carnitine Hcl, Ubiquinone, Hexylresorcinol, Emblica Officinalis Fruit Extract, Hydrolyzed Soy Protein, Tetrahexyldecyl Ascorbate, Isoquercetin, Mandelic Acid, These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Butylene Glycol (or BG) is used within cosmetic products for a few different reasons: Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients. Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness. Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes. Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath. However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products. Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH. In skincare formulas, citric acid can: While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants. Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations. Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger. However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure. 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 larg