Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Carrot & Stick The Repair Serum Versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum

Carrot & Stick The Repair Serum Versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum Detailed comparison of Carrot & Stick The Repair Serum versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum. This barrier-repair serum is formulated around Niacinamide

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Carrot & Stick The Repair Serum Versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum Detailed comparison of Carrot & Stick The Repair Serum versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum. This barrier-repair serum is formulated around Niacinamide and Sh-Oligopeptide-1 to strengthen the skin barrier and soften the look of wrinkles. This anti-aging serum is formulated around Tripeptide-10 Citrulline and Acetyl Octapeptide-3 to soften the look of wrinkles. No concerns Water Niacinamide Glycerin Acacia Senegal Gum Hydrolyzed Rhizobian Gum Camellia Sinensis Leaf Extract Chamomilla Recutita Flower Extract PCA Sodium PCA Sh-Oligopeptide-1 Sh-Oligopeptide-2 Sh-Polypeptide-1 Sh-Polypeptide-11 Sh-Polypeptide-9 Sodium Hyaluronate Acetyl Hexapeptide-8 Arginine Aspartic Acid Acetyl Glutamine Lecithin Carnitine Alanine Glycine Histidine Isoleucine Phenylalanine Proline Serine Threonine Valine Caffeine Ruscus Aculeatus Root Extract Chenopodium Quinoa Seed Extract Bacillus Citrus Reticulata Peel Extract Codonopsis Lanceolata Extract Coix Lacryma-Jobi Ma-Yuen Seed Extract Chrysanthemum Parthenium Extract Digitaria Ciliaris Flower Extract Glycyrrhiza Glabra Root Extract Nelumbo Nucifera Seed Extract Paeonia Suffruticosa Root Extract Paeonia Albiflora Flower Extract Polygonum Odoratum Extract Sodium Lactate Polyglutamic Acid Xanthan Gum Butylene Glycol 1,2-Hexanediol Citric Acid Caprylyl Glycol Sodium Benzoate Sodium Levulinate Potassium Sorbate Phenoxyethanol Water, Niacinamide, Glycerin, Acacia Senegal Gum, Hydrolyzed Rhizobian Gum, Camellia Sinensis Leaf Extract, Chamomilla Recutita Flower Extract, PCA, Sodium PCA, Sh-Oligopeptide-1, Sh-Oligopeptide-2, Sh-Polypeptide-1, Sh-Polypeptide-11, Sh-Polypeptide-9, Sodium Hyaluronate, Acetyl Hexapeptide-8, Arginine, Aspartic Acid, Acetyl Glutamine, Lecithin, Carnitine, Alanine, Glycine, Histidine, Isoleucine, Phenylalanine, Proline, Serine, Threonine, Valine, Caffeine, Ruscus Aculeatus Root Extract, Chenopodium Quinoa Seed Extract, Bacillus, Citrus Reticulata Peel Extract, Codonopsis Lanceolata Extract, Coix Lacryma-Jobi Ma-Yuen Seed Extract, Chrysanthemum Parthenium Extract, Digitaria Ciliaris Flower Extract, Glycyrrhiza Glabra Root Extract, Nelumbo Nucifera Seed Extract, Paeonia Suffruticosa Root Extract, Paeonia Albiflora Flower Extract, Polygonum Odoratum Extract, Sodium Lactate, Polyglutamic Acid, Xanthan Gum, Butylene Glycol, 1,2-Hexanediol, Citric Acid, Caprylyl Glycol, Sodium Benzoate, Sodium Levulinate, Potassium Sorbate, Phenoxyethanol Rosa Centifolia Flower Water Isopropyl Myristate Squalane Mannitol Natto Gum Tripeptide-10 Citrulline Acetyl Octapeptide-3 Palmitoyl Hexapeptide-12 Acetyl Tetrapeptide-11 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 Tocopheryl Acetate Retinyl Palmitate Ascorbic Acid Hydrolyzed Soy Protein Hydrolyzed Wheat Protein Pseudoalteromonas Ferment Extract Acrylates Copolymer Magnesium Chloride Polysorbate 20 Dimethyl Isosorbide Acrylates/C10-30 Alkyl Acrylate Crosspolymer Leuconostoc/Radish Root Ferment Filtrate PEG-8 Dimethicone Disodium Phosphate Carbomer Dextran Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate Triethanolamine Sodium Phosphate Octyldodecanol Silica Sodium Propoxyhydroxypropyl Thio These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Acetyl Hexapeptide-8 (also known as Argireline) is a synthetic hexapeptide that is often called a "topical Botox alternative". It works by mimicking how Botox relaxes muscles; it interferes with the signaling process that tells your facial muscles to contract. This can help soften expression lines like forehead wrinkles or crow's feet over time. The comparison to Botox does have limits because the molecule is water-loving and relatively large. Acetyl Hexapeptide-8 has a hard time absorbing deeply enough through the skin's outer barrier to actually reach the muscles. So whether it truly works the way Botox does at a biological level is still up for debate, but early clinical outcomes are fairly encouraging. A 12 week human study of a multi-ingredient regimen containing this ingredient saw: While some studies have observed improvements in wrinkle appearance, it is important to note that more consistent results are seen in multi-ingredient formulations (vs just Acetyl Hexapeptide-8 alone). Some research studies also used higher concentrations (up to 10%) while this ingredient is usually found in concentrations up to 0.005% in leave-on formulations. 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). 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. Lecithin is a term for a group of substances found in the