Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Woods_ Copenhagen Intense Hydra Serum Versus The [pH]ix The [pH]iller Peptide+ Serum

Woods_ Copenhagen Intense Hydra Serum Versus The [pH]ix The [pH]iller Peptide+ Serum Detailed comparison of Woods_ Copenhagen Intense Hydra Serum versus The [pH]ix The [pH]iller Peptide+ Serum. This hydrating serum is formulated around Sodium PCA to hydrate sk

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Woods_ Copenhagen Intense Hydra Serum Versus The [pH]ix The [pH]iller Peptide+ Serum Detailed comparison of Woods_ Copenhagen Intense Hydra Serum versus The [pH]ix The [pH]iller Peptide+ Serum. This hydrating serum is formulated around Sodium PCA to hydrate skin and strengthen the skin barrier. This anti-aging serum is formulated around Acetyl Hexapeptide-8 and Tripeptide-10 Citrulline to soften the look of wrinkles. Aloe Barbadensis Leaf Water Water Cucumis Sativus Fruit Water Propanediol Glycerin Sodium PCA Xanthan Gum Sodium Levulinate Pseudoalteromonas Ferment Extract Potassium Sorbate Caprylyl Glycol Phenoxyethanol Citric Acid Hydrolyzed Wheat Protein Ethylhexylglycerin Hydrolyzed Soy Protein Butylene Glycol Lecithin Glucose Carrageenan Tripeptide-10 Citrulline Carbomer Triethanolamine Tripeptide-1 Aloe Barbadensis Leaf Water, Water, Cucumis Sativus Fruit Water, Propanediol, Glycerin, Sodium PCA, Xanthan Gum, Sodium Levulinate, Pseudoalteromonas Ferment Extract, Potassium Sorbate, Caprylyl Glycol, Phenoxyethanol, Citric Acid, Hydrolyzed Wheat Protein, Ethylhexylglycerin, Hydrolyzed Soy Protein, Butylene Glycol, Lecithin, Glucose, Carrageenan, Tripeptide-10 Citrulline, Carbomer, Triethanolamine, Tripeptide-1 Nannochloropsis Oculata Extract Pullulan Acetyl Hexapeptide-8 Acmella Oleracea Extract Allantoin Euterpe Oleracea Fruit Extract Epilobium Angustifolium Flower/Leaf/Stem Extract Ascorbic Acid Dimethicone Cetyl Alcohol Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Glyceryl Stearate Caprylic/Capric Triglyceride Acrylamide/Sodium Acrylate Copolymer Paraffinum Liquidum Trideceth-6 Propylene Glycol Diazolidinyl Urea Iodopropynyl Butylcarbamate Tetrasodium EDTA Sodium Benzoate Alcohol Water, Nannochloropsis Oculata Extract, Pullulan, Acetyl Hexapeptide-8, Acmella Oleracea Extract, Allantoin, Euterpe Oleracea Fruit Extract, Epilobium Angustifolium Flower/Leaf/Stem Extract, Glycerin, Ascorbic Acid, Pseudoalteromonas Ferment Extract, Hydrolyzed Wheat Protein, Hydrolyzed Soy Protein, Tripeptide-10 Citrulline, Tripeptide-1, Lecithin, Butylene Glycol, Xanthan Gum, Carbomer, Triethanolamine, Caprylyl Glycol, Dimethicone, Cetyl Alcohol, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Glyceryl Stearate, Caprylic/Capric Triglyceride, Acrylamide/Sodium Acrylate Copolymer, Paraffinum Liquidum, Trideceth-6, Propylene Glycol, Diazolidinyl Urea, Iodopropynyl Butylcarbamate, Tetrasodium EDTA, Phenoxyethanol, Sodium Benzoate, Alcohol, Potassium Sorbate 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. 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. Hydrolyzed Soy Protein is a water-soluble blend of peptides and amino acids made by breaking down the protein from soybeans into smaller proteins. It's the most widely used hydrolyzed vegetable protein in cosmetics and it acts mainly as a skin and hair conditioning agent. The smaller fragments are water-loving so it forms a thin, moisture-retentive film on skin that helps reduce water loss and leaves things feeling softer and smoother. You'll often see it credited with "firming" or "anti-aging" ben