Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The Ordinary Multi-Antioxidant Radiance Serum Versus Theramid Copper Peptide

The Ordinary Multi-Antioxidant Radiance Serum Versus Theramid Copper Peptide Detailed comparison of The Ordinary Multi-Antioxidant Radiance Serum versus Theramid Copper Peptide. This brightening serum is formulated around Ascorbyl Glucoside and Ergothioneine t

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The Ordinary Multi-Antioxidant Radiance Serum Versus Theramid Copper Peptide Detailed comparison of The Ordinary Multi-Antioxidant Radiance Serum versus Theramid Copper Peptide. This brightening serum is formulated around Ascorbyl Glucoside and Ergothioneine to brighten dull-looking skin and calm redness. This anti-aging serum is formulated around Copper Tripeptide-1 and Bifida Ferment Lysate to soften the look of wrinkles and strengthen the skin barrier. Water Propanediol Ascorbyl Glucoside Ergothioneine Epigallocatechin Gallatyl Glucoside Acetyl Tetrapeptide-2 Heptapeptide-6 Tocotrienols Tremella Fuciformis Sporocarp Extract Sphingomonas Ferment Extract Panax Ginseng Root Extract Bixa Orellana Seed Extract Glycerin Isoceteth-20 Citric Acid Sodium Citrate Sodium Hydroxide Caprylyl Glycol Ethylhexylglycerin Phenoxyethanol Chlorphenesin Water, Propanediol, Ascorbyl Glucoside, Ergothioneine, Epigallocatechin Gallatyl Glucoside, Acetyl Tetrapeptide-2, Heptapeptide-6, Tocotrienols, Tremella Fuciformis Sporocarp Extract, Sphingomonas Ferment Extract, Panax Ginseng Root Extract, Bixa Orellana Seed Extract, Glycerin, Isoceteth-20, Citric Acid, Sodium Citrate, Sodium Hydroxide, Caprylyl Glycol, Ethylhexylglycerin, Phenoxyethanol, Chlorphenesin Dimethicone Hydrogenated Ethylhexyl Olivate Betaine Isododecane PEG-10 Dimethicone Copper Tripeptide-1 Bifida Ferment Lysate PEG/PPG-18/18 Dimethicone Magnesium Sulfate Hydrogenated Castor Oil/Sebacic Acid Copolymer Sodium Hyaluronate Acetyl Hexapeptide-1 Trifluoroacetyl Tripeptide-2 Sh-Oligopeptide-1 Sh-Oligopeptide-2 Sh-Polypeptide-1 Sh-Polypeptide-9 Sh-Polypeptide-11 Bacillus/Folic Acid Ferment Filtrate Extract Acetyl Glutamine Disteardimonium Hectorite Hydrogenated Olive Oil Unsaponifiables Propylene Carbonate Lecithin Butylene Glycol Dextran Tocopherol Acetic Acid Lactic Acid Disodium EDTA Sodium Benzoate 1,2-Hexanediol Water, Propanediol, Dimethicone, Hydrogenated Ethylhexyl Olivate, Betaine, Isododecane, PEG-10 Dimethicone, Copper Tripeptide-1, Bifida Ferment Lysate, Glycerin, PEG/PPG-18/18 Dimethicone, Magnesium Sulfate, Hydrogenated Castor Oil/Sebacic Acid Copolymer, Sodium Hyaluronate, Acetyl Hexapeptide-1, Acetyl Tetrapeptide-2, Trifluoroacetyl Tripeptide-2, Sh-Oligopeptide-1, Sh-Oligopeptide-2, Sh-Polypeptide-1, Sh-Polypeptide-9, Sh-Polypeptide-11, Bacillus/Folic Acid Ferment Filtrate Extract, Acetyl Glutamine, Disteardimonium Hectorite, Hydrogenated Olive Oil Unsaponifiables, Propylene Carbonate, Lecithin, Caprylyl Glycol, Butylene Glycol, Dextran, Tocopherol, Acetic Acid, Lactic Acid, Disodium EDTA, Sodium Benzoate, 1,2-Hexanediol, Ethylhexylglycerin, Phenoxyethanol These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. This peptide is more commonly known as Thymulen 4 BG. It is derived from a youth hormone called thymopoietin. Thymopoietin helps regulate the immune system and decreases naturally with age. According to the manufacturer, this peptide boosts the skin's immune defenses and regenerates the outer layers of skin. 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). 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. 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 to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own. Typical use co