Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Farmacy Brighten Up 3% TXA Dark Spot Toner with Azelaic Acid + PHA Versus Paula's Choice Discoloration Repair Serum

Farmacy Brighten Up 3% TXA Dark Spot Toner with Azelaic Acid + PHA Versus Paula's Choice Discoloration Repair Serum Detailed comparison of Farmacy Brighten Up 3% TXA Dark Spot Toner with Azelaic Acid + PHA versus Paula's Choice Discoloration Repair Serum. This

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Farmacy Brighten Up 3% TXA Dark Spot Toner with Azelaic Acid + PHA Versus Paula's Choice Discoloration Repair Serum Detailed comparison of Farmacy Brighten Up 3% TXA Dark Spot Toner with Azelaic Acid + PHA versus Paula's Choice Discoloration Repair Serum. This brightening toner is formulated around Gluconolactone and Tranexamic Acid to fade the look of dark spots and brighten dull-looking skin. This brightening serum is formulated around Niacinamide and Tranexamic Acid to fade the look of dark spots and brighten dull-looking skin. No concerns Water Gluconolactone Pentylene Glycol Isopentyldiol Tranexamic Acid Betaine Propanediol Azelaic Acid Ascorbic Acid Citrus Aurantium Amara Fruit Extract Citrus Aurantium Sinensis Peel Extract Citrus Reticulata Fruit Extract Glycerin Allantoin Polyglycerin-6 Inulin Fructose Glucose Xanthan Gum Cellulose Gum Lactic Acid Citric Acid Sodium Phytate Cellulose Water, Gluconolactone, Pentylene Glycol, Isopentyldiol, Tranexamic Acid, Betaine, Propanediol, Azelaic Acid, Ascorbic Acid, Citrus Aurantium Amara Fruit Extract, Citrus Aurantium Sinensis Peel Extract, Citrus Reticulata Fruit Extract, Glycerin, Allantoin, Polyglycerin-6, Inulin, Fructose, Glucose, Xanthan Gum, Cellulose Gum, Lactic Acid, Citric Acid, Sodium Phytate, Cellulose Niacinamide C13-15 Alkane Caprylic/Capric Triglyceride Dicaprylyl Carbonate Ethyl Macadamiate Behenyl Alcohol Glyceryl Stearate Butylene Glycol Silybum Marianum Seed Oil Tocopherol Lactobacillus/Coconut Fruit Juice Ferment Filtrate Lecithin Bakuchiol Caprylyl Glycol Hydrogenated Lecithin Glycine Soja Oil Hexylene Glycol Boerhavia Diffusa Root Extract Glycine Soja Sterols Malic Acid Phenoxyethanol Ethylhexylglycerin Water, Niacinamide, Glycerin, Tranexamic Acid, C13-15 Alkane, Caprylic/Capric Triglyceride, Dicaprylyl Carbonate, Ethyl Macadamiate, Behenyl Alcohol, Glyceryl Stearate, Butylene Glycol, Silybum Marianum Seed Oil, Tocopherol, Lactobacillus/Coconut Fruit Juice Ferment Filtrate, Lecithin, Bakuchiol, Xanthan Gum, Caprylyl Glycol, Hydrogenated Lecithin, Allantoin, Glycine Soja Oil, Hexylene Glycol, Boerhavia Diffusa Root Extract, Glycine Soja Sterols, Citric Acid, Sodium Phytate, Malic Acid, Phenoxyethanol, Ethylhexylglycerin These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Allantoin is a soothing ingredient known for its protective and moisturizing properties; it's basically a quiet workhorse ingredient you can find in a huge range of cosmetics. Though it can be derived from the comfrey plant, allantoin is produced synthetically for cosmetic products to ensure purity. Research shows it can encourage your skin cells to turn over and renew by stimulating keratinocyte and fibroblast proliferation. It also has mild keratolytic properties to help loosen and shed dead skin cells without being harsh. Studies also suggest allantoin can help calm inflammation by dialing down some of the chemical signals your skin sends out when it is irritated. This ingredient is typically used in the 0.1-0.5% range, and the FDA recognizes it as a skin protectant in OTC products up to 2%. Overall, allantoin is a wonderful addition to most routines; it is stable across a wide pH range (~4-8), works well with other ingredients, and is considered non-sensitizing/non-irritating. Fun fact: Allantoin is naturally occurring in comfrey root, beets, chamomile, and wheat sprouts. Our bodies even produce it as a byproduct of uric acid metabolism. 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