Peptide Skincare & BeautySkin science and ingredient guides

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Paula's Choice Peptide Booster Versus Skinfix Barrier+ Triple Lipid + Collagen + Niacinamide Activating Serum

Paula's Choice Peptide Booster Versus Skinfix Barrier+ Triple Lipid + Collagen + Niacinamide Activating Serum Detailed comparison of Paula's Choice Peptide Booster versus Skinfix Barrier+ Triple Lipid + Collagen + Niacinamide Activating Serum. This anti-aging

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Paula's Choice Peptide Booster Versus Skinfix Barrier+ Triple Lipid + Collagen + Niacinamide Activating Serum Detailed comparison of Paula's Choice Peptide Booster versus Skinfix Barrier+ Triple Lipid + Collagen + Niacinamide Activating 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 barrier-repair serum is formulated around Niacinamide and Ceramide NP to strengthen the skin barrier and soften the look of wrinkles. 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 Caprylyl Caprylate/Caprate Propanediol Jojoba Oil/Macadamia Seed Oil Esters Niacinamide Ammonium Acryloyldimethyltaurate/Vp Copolymer Squalene Macadamia Integrifolia Seed Oil Amylopectin Phytosteryl Macadamiate Collagen Amino Acids Lithothamnion Calcareum Extract Sodium Hyaluronate Oligopeptide-3 Oligopeptide-2 Oligopeptide-1 Hexapeptide-11 Folic Acid Bacillus/Soybean Ferment Extract Lactic Acid Ceramide NP Phytosterols Phytosphingosine Ceramide AP Cholesterol Myrica Cerifera Fruit Extract Akebia Quinata Stem Extract Prunus Lannesiana Flower Extract Saccharomyces Lysate Lactobacillus Ferment Lysate Ceramide EOP Polyglutamic Acid Tocopheryl Acetate Tocopherol Sodium Lauroyl Lactylate Hexylene Glycol Pentylene Glycol Acetyl Glutamine Trisodium Ethylenediamine Disuccinate Leuconostoc/Radish Root Ferment Filtrate Sodium Benzoate Hydroxyacetophenone Xanthan Gum Potassium Sorbate 1,2-Hexanediol Water, Caprylyl Caprylate/Caprate, Propanediol, Jojoba Oil/Macadamia Seed Oil Esters, Niacinamide, Glycerin, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Be the first to review 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. Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created. Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin. Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on). Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture. Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%. It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier. Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%. A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions. Dextran is a sugar (polysaccharide) with skin hydrating properties. Fun fact: Louis Pasteur first discovered this ingredient as a microbial product in wine. 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 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 hum