Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Medik8 Liquid Peptides Advanced MP Versus Biologique Recherche Elastine Sérum Authentique

Medik8 Liquid Peptides Advanced MP Versus Biologique Recherche Elastine Sérum Authentique Detailed comparison of Medik8 Liquid Peptides Advanced MP versus Biologique Recherche Elastine Sérum Authentique. This anti-aging serum is formulated around Palmitoyl Tri

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Medik8 Liquid Peptides Advanced MP Versus Biologique Recherche Elastine Sérum Authentique Detailed comparison of Medik8 Liquid Peptides Advanced MP versus Biologique Recherche Elastine Sérum Authentique. This anti-aging serum is formulated around Palmitoyl Tripeptide-38 and Palmitoyl Tripeptide-5 to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Palmitoyl Oligopeptide and Palmitoyl Hexapeptide-12 to soften the look of wrinkles and hydrate skin. Water Glycerin Dimethicone Dimethyl Isosorbide Butylene Glycol Undecane Arginine Inulin Microcrystalline Cellulose Ceteareth-20 Tridecane Tocopherol Hydroxyacetophenone Sodium Hyaluronate Palmitoyl Tripeptide-38 Panthenol Caprylic/Capric Triglyceride Palmitoyl Tripeptide-5 Polyacrylate Crosspolymer-6 Palmitoyl Tripeptide-1 Pullulan Tetrapeptide-21 Palmitoyl Tetrapeptide-10 Palmitoyl Tetrapeptide-7 Ammonium Polyacryloyldimethyl Taurate Glyceryl Linoleate Acetyl Hexapeptide-8 Pentapeptide-18 Oligopeptide-1 Arginine/Lysine Polypeptide Sucrose Palmitate Cetyl Palmitate Phenoxyethanol Ethylhexylglycerin Carbomer Copper Palmitoyl Heptapeptide-14 Heptapeptide-15 Palmitate Benzotriazolyl Dodecyl P-Cresol Polysorbate 80 Sorbitan Stearate Polysorbate 20 Carnosine Sodium Metabisulfite Dunaliella Salina Extract Helianthus Annuus Seed Oil Hydroxypropyl Cyclodextrin Dimethicone/Vinyl Dimethicone Crosspolymer Sodium Benzoate Hydrogenated Lecithin Caprylyl Glycol Pantolactone Xanthan Gum Disodium EDTA T-Butyl Alcohol Potassium Sorbate Citric Acid Glyceryl Caprylate Lactic Acid/Glycolic Acid Copolymer Polyvinyl Alcohol Phenylpropanol Water, Glycerin, Dimethicone, Dimethyl Isosorbide, Butylene Glycol, Undecane, Arginine, Inulin, Microcrystalline Cellulose, Ceteareth-20, Tridecane, Tocopherol, Hydroxyacetophenone, Sodium Hyaluronate, Palmitoyl Tripeptide-38, Panthenol, Caprylic/Capric Triglyceride, Palmitoyl Tripeptide-5, Polyacrylate Crosspolymer-6, Palmitoyl Tripeptide-1, Pullulan, Tetrapeptide-21, Palmitoyl Tetrapeptide-10, Palmitoyl Tetrapeptide-7, Ammonium Polyacryloyldimethyl Taurate, Glyceryl Linoleate, Acetyl Hexapeptide-8, Pentapeptide-18, Oligopeptide-1, Arginine/Lysine Polypeptide, Sucrose Palmitate, Cetyl Palmitate, Phenoxyethanol, Ethylhexylglycerin, Carbomer, Copper Palmitoyl Heptapeptide-14, Heptapeptide-15 Palmitate, Benzotriazolyl Dodecyl P-Cresol, Polysorbate 80, Sorbitan Stearate, Polysorbate 20, Carnosine, Sodium Metabisulfite, Dunaliella Salina Extract, Helianthus Annuus Seed Oil, Hydroxypropyl Cyclodextrin, Dimethicone/Vinyl Dimethicone Crosspolymer, Sodium Benzoate, Hydrogenated Lecithin, Caprylyl Glycol, Pantolactone, Xanthan Gum, Disodium EDTA, T-Butyl Alcohol, Potassium Sorbate, Citric Acid, Glyceryl Caprylate, Lactic Acid/Glycolic Acid Copolymer, Polyvinyl Alcohol, Phenylpropanol Propylene Glycol Pentylene Glycol Glyceryl Polymethacrylate Alteromonas Ferment Extract Equisetum Arvense Extract Sodium Hyaluronate Crosspolymer-3 Palmitoyl Oligopeptide Palmitoyl Hexapeptide-12 Acacia Senegal Gum PEG-8 Sodium Lactate Caprylhydroxamic Acid Triethanolamine Isopropyl Alcohol Methylpropanediol Water, Propylene Glycol, Glycerin, Pentylene Glycol, Glyceryl Polymethacrylate, Butylene Glycol, Alteromonas Ferment Extract, Equisetum Arvense Extract, Sodium Hyaluronate Crosspolymer-3, Palmitoyl Oligopeptide, Palmitoyl Hexapeptide-12, Palmitoyl Tetrapeptide-7, Acacia Senegal Gum, Carbomer, PEG-8, Sodium Lactate, Caprylhydroxamic Acid, Xanthan Gum, Polysorb 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. 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. 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 humidity. Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine. Palmitoyl Tetrapeptide-7 (formerly Palmitoyl Tetrapeptide-3) is a synthetic peptide. Its main job is to fight what researchers call "inflammaging". "Inflammaging" is the slow, low-grade chronic inflammation that quietly breaks down collagen as we age. This ingredient calms down a specific inflammation signal in your skin cells (called IL-6). When left unchecked, this signal triggers enzymes that break dow