Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Paula's Choice Skin Perfecting 25% AHA + 2% BHA Exfoliant Peel Versus Bubble Deep Dive AHA + PHA Exfoliating Mask

Paula's Choice Skin Perfecting 25% AHA + 2% BHA Exfoliant Peel Versus Bubble Deep Dive AHA + PHA Exfoliating Mask Detailed comparison of Paula's Choice Skin Perfecting 25% AHA + 2% BHA Exfoliant Peel versus Bubble Deep Dive AHA + PHA Exfoliating Mask. This smo

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Paula's Choice Skin Perfecting 25% AHA + 2% BHA Exfoliant Peel Versus Bubble Deep Dive AHA + PHA Exfoliating Mask Detailed comparison of Paula's Choice Skin Perfecting 25% AHA + 2% BHA Exfoliant Peel versus Bubble Deep Dive AHA + PHA Exfoliating Mask. This smoothing exfoliator is formulated around Glycolic Acid and Lactic Acid to refine skin texture and brighten dull-looking skin. This smoothing exfoliator is formulated around Glycolic Acid and Mandelic Acid to refine skin texture and brighten dull-looking skin. Water Aminomethyl Propanol Glycolic Acid Lactic Acid Mandelic Acid Isoamyl Laurate Tartaric Acid Propanediol Salicylic Acid Malic Acid Butylene Glycol Clitoria Ternatea Flower Extract Sodium Hyaluronate Glycyrrhetinic Acid Glycerin Tocopherol Bisabolol Allantoin Hydroxyethylcellulose Hydrogenated Lecithin Xanthan Gum Polyglyceryl-4 Laurate Polyacrylate Crosspolymer-6 Titanium Dioxide Mica Phenoxyethanol Water, Aminomethyl Propanol, Glycolic Acid, Lactic Acid, Mandelic Acid, Isoamyl Laurate, Tartaric Acid, Propanediol, Salicylic Acid, Malic Acid, Butylene Glycol, Clitoria Ternatea Flower Extract, Sodium Hyaluronate, Glycyrrhetinic Acid, Glycerin, Tocopherol, Bisabolol, Allantoin, Hydroxyethylcellulose, Hydrogenated Lecithin, Xanthan Gum, Polyglyceryl-4 Laurate, Polyacrylate Crosspolymer-6, Titanium Dioxide, Mica, Phenoxyethanol Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Rubus Idaeus Seed Oil Potassium Hydroxide Gluconolactone Salix Nigra Bark Extract Pyrus Malus Fruit Extract Vaccinium Macrocarpon Fruit Extract Azelaic Acid Glycyrrhiza Glabra Root Extract Leuconostoc/Radish Root Ferment Filtrate Sodium Phytate Melia Azadirachta Leaf Extract Melia Azadirachta Flower Extract Corallina Officinalis Extract Ananas Sativus Fruit Extract Citric Acid Curcuma Longa Root Extract Ocimum Basilicum Flower/Leaf Extract Ocimum Sanctum Leaf Extract Lactobacillus/Punica Granatum Fruit Ferment Extract Lactobacillus/Pumpkin Fruit Ferment Filtrate Hydrolyzed Fibroin 1,2-Hexanediol Caprylyl Glycol Potassium Sorbate Sodium Benzoate Water, Glycolic Acid, Glycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Rubus Idaeus Seed Oil, Potassium Hydroxide, Mandelic Acid, Gluconolactone, Salix Nigra Bark Extract, Malic Acid, Pyrus Malus Fruit Extract, Allantoin, Vaccinium Macrocarpon Fruit Extract, Lactic Acid, Azelaic Acid, Glycyrrhiza Glabra Root Extract, Leuconostoc/Radish Root Ferment Filtrate, Sodium Phytate, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract, Corallina Officinalis Extract, Ananas Sativus Fruit Extract, Citric Acid, Curcuma Longa Root Extract, Tocopherol, Ocimum Basilicum Flower/Leaf Extract, Ocimum Sanctum Leaf Extract, Lactobacillus/Punica Granatum Fruit Ferment Extract, Lactobacillus/Pumpkin Fruit Ferment Filtrate, Hydrolyzed Fibroin, 1,2-Hexanediol, Caprylyl Glycol, Potassium Sorbate, Sodium Benzoate 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. 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. Glycolic Acid is arguably the most famous alpha hydroxy acid (AHA) with tons of research backing its benefits. It is found naturally in sugar cane but the form used in skincare is usually synthetic for purity and stability. Glycolic acid removes the top layer of dead skin cells to allow newer and fresher ones to emerge. AHAs work by breaking down the structural “glue” that holds old skin cells in place. When that buildup is gone, your skin can renew itself more efficiently. Research also shows glycolic acid stimulates collagen production, helping to firm and thicken the skin over time. This is one of its biggest advantages over other AHAs. Overall, glycolic acid helps with: Fun fact: Glycolic acid boosts skin hydration by helping it produce molecules that increase hyaluro