Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Elemis Peptide4 Night Recovery Cream-Oil Versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum

Elemis Peptide4 Night Recovery Cream-Oil Versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum Detailed comparison of Elemis Peptide4 Night Recovery Cream-Oil versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum. This barrier-repair night moisturizer is

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Elemis Peptide4 Night Recovery Cream-Oil Versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum Detailed comparison of Elemis Peptide4 Night Recovery Cream-Oil versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum. This barrier-repair night moisturizer is formulated around Simmondsia Chinensis Seed Oil to strengthen the skin barrier and hydrate skin. This anti-aging serum is formulated around Tripeptide-10 Citrulline and Acetyl Octapeptide-3 to soften the look of wrinkles. Water Glycerin Coco-Caprylate Cocos Nucifera Oil Glyceryl Oleate Citrate Matthiola Longipetala Seed Oil Simmondsia Chinensis Seed Oil Phenoxyethanol Panthenol Acrylates/C10-30 Alkyl Acrylate Crosspolymer Parfum Perilla Ocymoides Seed Oil Chondrus Crispus Powder Tocopherol Ethylhexylglycerin Sodium Hydroxide Tocopheryl Acetate Disodium EDTA Benzyl Benzoate Citrus Limon Peel Extract Linalool Limonene Hydrolyzed Yeast Protein Hexyl Cinnamal Sodium Benzoate Cananga Odorata Flower Oil Citrus Aurantium Dulcis Peel Oil Citrus Limon Peel Oil Myristica Fragrans Kernel Oil Eugenol Coumarin Citrus Aurantium Amara Leaf/Twig Oil Citrus Aurantium Amara Peel Oil Coriandrum Sativum Fruit Oil Water, Glycerin, Coco-Caprylate, Cocos Nucifera Oil, Glyceryl Oleate Citrate, Matthiola Longipetala Seed Oil, Simmondsia Chinensis Seed Oil, Phenoxyethanol, Panthenol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Parfum, Perilla Ocymoides Seed Oil, Chondrus Crispus Powder, Tocopherol, Ethylhexylglycerin, Sodium Hydroxide, Tocopheryl Acetate, Disodium EDTA, Benzyl Benzoate, Citrus Limon Peel Extract, Linalool, Limonene, Hydrolyzed Yeast Protein, Hexyl Cinnamal, Sodium Benzoate, Cananga Odorata Flower Oil, Citrus Aurantium Dulcis Peel Oil, Citrus Limon Peel Oil, Myristica Fragrans Kernel Oil, Eugenol, Coumarin, Citrus Aurantium Amara Leaf/Twig Oil, Citrus Aurantium Amara Peel Oil, Coriandrum Sativum Fruit Oil Rosa Centifolia Flower Water Isopropyl Myristate Squalane Mannitol Butylene Glycol Natto Gum Tripeptide-10 Citrulline Acetyl Octapeptide-3 Palmitoyl Hexapeptide-12 Acetyl Tetrapeptide-11 Acetyl Hexapeptide-8 Acetyl Hexapeptide-1 Palmitoyl Oligopeptide Acetyl Tetrapeptide-9 Acetyl Tetrapeptide-2 Tripeptide-1 Palmitoyl Tetrapeptide-7 Hexapeptide-11 Dipeptide Diaminobutyroyl Benzylamide Diacetate Palmitoyl Tripeptide-5 Trifluoroacetyl Tripeptide-2 Palmitoyl Tripeptide-1 Sodium Polyglutamate Sodium Hyaluronate Retinyl Palmitate Ascorbic Acid Hydrolyzed Soy Protein Hydrolyzed Wheat Protein Lecithin Pseudoalteromonas Ferment Extract Acrylates Copolymer Magnesium Chloride Polysorbate 20 Dimethyl Isosorbide Leuconostoc/Radish Root Ferment Filtrate PEG-8 Dimethicone Disodium Phosphate Carbomer Dextran Sodium Lactate Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate Xanthan Gum Triethanolamine Sodium Phosphate Octyldodecanol Silica Sodium Propoxyhydroxypropyl Thiosulfate Silica Caprylyl Glycol Potassium Sorbate Water, Glycerin, Rosa Centifolia Flower Water, Isopropyl Myristate, Squalane, Mannitol, Butylene Glycol, Natto Gum, Tripeptide-10 Citrulline, Acetyl Octapeptide-3, Palmitoyl Hexapeptide-12, Acetyl Tetrapeptide-11, Acetyl Hexapeptide-8, Acetyl Hexapeptide-1, Palmitoyl Oligopeptide, Acetyl Tetrapeptide-9, Acetyl Tetrapeptide-2, Tripeptide-1, Palmitoyl Tetrapeptide-7, Hexapeptide-11, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Palmitoyl Tripeptide-5, Trifluoroacetyl Tripeptide-2, Palmitoyl Tripeptide-1, Sodium Polyglutamate, Sodium Hyaluronate, Tocopheryl Ac These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken, emulsify, and improve the texture of products. As an emulsifier, it helps stabilize oil-in-water emulsions to give products an elegant feel when applied. It can also form a thin protective film on skin. One study found that a formula using this polymer helped slow down how quickly other ingredients (like DEET) were absorbed through skin. A 2024 study of over 1,300 patients confirmed that sensitization to this ingredient is rare. It is also non-mutagenic and has a clean track record. 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 concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU. Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages. Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncomm