Peptide Skincare & BeautySkin science and ingredient guides

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The Ordinary Multi-Peptide Lash And Brow Serum Versus Nulastin Follicle Fortifying Serum

The Ordinary Multi-Peptide Lash And Brow Serum Versus Nulastin Follicle Fortifying Serum Detailed comparison of The Ordinary Multi-Peptide Lash And Brow Serum versus Nulastin Follicle Fortifying Serum. No concerns Water Glycerin Butylene Glycol Myristoyl Penta

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The Ordinary Multi-Peptide Lash And Brow Serum Versus Nulastin Follicle Fortifying Serum Detailed comparison of The Ordinary Multi-Peptide Lash And Brow Serum versus Nulastin Follicle Fortifying Serum. No concerns Water Glycerin Butylene Glycol Myristoyl Pentapeptide-17 Biotinoyl Tripeptide-1 Oligopeptide-2 Acetyl Tetrapeptide-3 Caffeine Panthenol Arginine Glycine Glycoproteins Larix Europaea Wood Extract Trifolium Pratense Flower Extract Camellia Sinensis Leaf Extract Dextran Maltodextrin Zinc Chloride Hydroxyethylcellulose Xanthan Gum Trisodium Ethylenediamine Disuccinate Polysorbate 20 Sodium Metabisulfite Caprylyl Glycol 1,2-Hexanediol Sodium Benzoate Benzoic Acid Ethylhexylglycerin Phenoxyethanol Chlorphenesin Water, Glycerin, Butylene Glycol, Myristoyl Pentapeptide-17, Biotinoyl Tripeptide-1, Oligopeptide-2, Acetyl Tetrapeptide-3, Caffeine, Panthenol, Arginine, Glycine, Glycoproteins, Larix Europaea Wood Extract, Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract, Dextran, Maltodextrin, Zinc Chloride, Hydroxyethylcellulose, Xanthan Gum, Trisodium Ethylenediamine Disuccinate, Polysorbate 20, Sodium Metabisulfite, Caprylyl Glycol, 1,2-Hexanediol, Sodium Benzoate, Benzoic Acid, Ethylhexylglycerin, Phenoxyethanol, Chlorphenesin Sh-Polypeptide-50 Keratin Carbomer Sodium Phytate Sodium Phosphate Sodium Chloride Sh-Polypeptide-62 Isopropyl Cloprostenate Sodium Hydroxide Water, Myristoyl Pentapeptide-17, Glycerin, Sh-Polypeptide-50, Keratin, Carbomer, Sodium Phytate, Sodium Phosphate, Sodium Chloride, Sh-Polypeptide-62, Isopropyl Cloprostenate, Sodium Hydroxide, Phenoxyethanol 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. 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. Myristoyl Pentapeptide-17 is a five amino peptide attached to myristic acid to help it absorb better into skin. It's mostly used for lash growth and as a delivery vehicle for other ingredients. The myristic acid "tail" is basically a delivery upgrade that helps the peptide mix with your skin's natural oils so it can get where it needs to go. In your eyelash follicles, it activates the keratin gene and promotes nutrient absorption into the follicle. This translates to thicker and longer eyelashes over time. Besides stimulating keratin production for lash growth, this ingredient enhances the delivery of other active ingredients in a formula. The clinical evidence is still pretty early-stage at this point. A 90 day study in 29 participants found improvements in lash length (10.52%), volume (9.3%), thickness (35%), and curl (50.83%) with no adverse reactions reported. You might have heard that eyelash serums can cause pigmentation change in eye color to turn eyes brown. This is associated with a different class of lash serum ingredients: prostaglandin analogs. Myristoyl Pentapeptide-17 is a different thing entirely and has no known association with iris pigmentation changes. The 90 day study noted no adverse effects around the eye area at all. Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!). It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome. On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive. Another perk of this ingredient is that it stays functional across a wide pH range (3-10). You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin