Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Paula's Choice Peptide Booster Versus Paula's Choice Resist Ultra-Light Super Antioxidant Concentrate Serum

Paula's Choice Peptide Booster Versus Paula's Choice Resist Ultra-Light Super Antioxidant Concentrate Serum Detailed comparison of Paula's Choice Peptide Booster versus Paula's Choice Resist Ultra-Light Super Antioxidant Concentrate Serum. This anti-aging trea

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Paula's Choice Peptide Booster Versus Paula's Choice Resist Ultra-Light Super Antioxidant Concentrate Serum Detailed comparison of Paula's Choice Peptide Booster versus Paula's Choice Resist Ultra-Light Super Antioxidant Concentrate Serum. This anti-aging treatment is formulated around Tripeptide-1 and Palmitoyl Tripeptide-1 to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Resveratrol and Niacinamide to soften the look of wrinkles and calm redness. Water Glycerin PEG-8 Dimethicone Tripeptide-1 Palmitoyl Tripeptide-1 Palmitoyl Tetrapeptide-7 Palmitoyl Hexapeptide-12 Myristoyl Hexapeptide-16 Myristoyl Pentapeptide-17 Hexanoyl Dipeptide-3 Norleucine Acetate Azelaoyl Bis-Dipeptide-10 Glycoproteins Phospholipids Adenosine Dipotassium Glycyrrhizate Arginine Valine Glycine Alanine Glutamic Acid Serine Threonine Yeast Extract Isoleucine Proline Histidine Phenylalanine PCA Phytic Acid Panax Ginseng Root Extract Sodium PCA Psidium Guajava Fruit Extract Euterpe Oleracea Fruit Extract Ahnfeltiopsis Concinna Extract Dextran Hydrolyzed Silk Lecithin Glyceryl Polymethacrylate C12-16 Pareth-9 Trideceth-12 Sodium Lactate Carbomer Aspartic Acid Polysorbate 20 Butylene Glycol Caprylyl Glycol PEG-8 C11-15 Pareth-7 Guar Hydroxypropyltrimonium Chloride Phytosteryl/Octyldodecyl Lauroyl Glutamate Ectoin Citrate Buffer Trimethylsiloxyamodimethicone Phenoxyethanol Sodium Hydroxide Ethylhexylglycerin Water, Glycerin, PEG-8 Dimethicone, Tripeptide-1, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Palmitoyl Hexapeptide-12, Myristoyl Hexapeptide-16, Myristoyl Pentapeptide-17, Hexanoyl Dipeptide-3 Norleucine Acetate, Azelaoyl Bis-Dipeptide-10, Glycoproteins, Phospholipids, Adenosine, Dipotassium Glycyrrhizate, Arginine, Valine, Glycine, Alanine, Glutamic Acid, Serine, Threonine, Yeast Extract, Isoleucine, Proline, Histidine, Phenylalanine, PCA, Phytic Acid, Panax Ginseng Root Extract, Sodium PCA, Psidium Guajava Fruit Extract, Euterpe Oleracea Fruit Extract, Ahnfeltiopsis Concinna Extract, Dextran, Hydrolyzed Silk, Lecithin, Glyceryl Polymethacrylate, C12-16 Pareth-9, Trideceth-12, Sodium Lactate, Carbomer, Aspartic Acid, Polysorbate 20, Butylene Glycol, Caprylyl Glycol, PEG-8, C11-15 Pareth-7, Guar Hydroxypropyltrimonium Chloride, Phytosteryl/Octyldodecyl Lauroyl Glutamate, Ectoin, Citrate Buffer, Trimethylsiloxyamodimethicone, Phenoxyethanol, Sodium Hydroxide, Ethylhexylglycerin Cyclopentasiloxane Dimethicone Polysilicone-11 Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone Hyaluronic Acid Resveratrol Niacinamide Quercetin Tetrahexyldecyl Ascorbate Tocopherol Ubiquinone Epigallocatechin Gallate Sea Whip Extract Bisabolol Beta-Glucan Xanthan Gum Acrylates/C10-30 Alkyl Acrylate Crosspolymer Disodium EDTA Water, Cyclopentasiloxane, Butylene Glycol, Dimethicone, Glycerin, Polysorbate 20, Polysilicone-11, Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone, Hyaluronic Acid, Resveratrol, Niacinamide, Quercetin, Adenosine, Tetrahexyldecyl Ascorbate, Tocopherol, Phospholipids, Ubiquinone, Epigallocatechin Gallate, Sea Whip Extract, Bisabolol, Beta-Glucan, Phytic Acid, Xanthan Gum, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Hydroxide, Disodium EDTA, Ethylhexylglycerin, Phenoxyethanol These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Adenosine is a purine nucleoside that your body already makes in every cell. In skincare, it acts mainly as a skin conditioning and anti-aging agent. The way it works is fairly well mapped out: Your skin has cells called fibroblasts that build collagen (the stuff that keeps skin firm and smooth). Adenosine basically flips a switch on these cells that tells them to get to work making more collagen and other proteins. These cells slow down on their own as skin ages, so Adenosine helps give them a little nudge to keep going. The clinical backing is pretty solid too. A blind, randomized, placebo-controlled trial of 126 women aged 45-65 tested a 0.1% cream twice daily and found real improvements in crow's feet and frown lines using a precise 3D skin-mapping technique; these changes showed up by week 3 and held at 2 months. A later study using Adenosine-loaded dissolving microneedle patches reported gains in wrinkle depth, dermal density, elasticity, and hydration. On concentrations, South Korea's Ministry of Food and Drug Safety has set 0.04% as the approved functional anti-wrinkle level. You'll typically see this ingredient used somewhere in the 0.04-0.1% range since it works at low doses. This ingredient has been found safe for cosmetics with the data showing no irritation or sensitization. Overall, this is a great ingredient for any anti-aging routine and has no photosensitizing effect, so it suits both AM and PM use. 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. Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that: The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure. Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations. 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