Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

COSRX The 6 Peptide Skin Booster Serum Versus Necessaire The Neck Serum

COSRX The 6 Peptide Skin Booster Serum Versus Necessaire The Neck Serum Detailed comparison of COSRX The 6 Peptide Skin Booster Serum versus Necessaire The Neck Serum. This anti-aging serum is formulated around Niacinamide and Acetyl Hexapeptide-8 to soften th

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COSRX The 6 Peptide Skin Booster Serum Versus Necessaire The Neck Serum Detailed comparison of COSRX The 6 Peptide Skin Booster Serum versus Necessaire The Neck Serum. This anti-aging serum is formulated around Niacinamide and Acetyl Hexapeptide-8 to soften the look of wrinkles and strengthen the skin barrier. This anti-aging serum is formulated around Niacinamide and Acetyl Hexapeptide-8 to soften the look of wrinkles and refine skin texture. Water Dipropylene Glycol Glycerin Pentylene Glycol 1,2-Hexanediol Niacinamide Acetyl Hexapeptide-8 Copper Tripeptide-1 Sh-Polypeptide-121 Dipeptide Diaminobutyroyl Benzylamide Diacetate Oligopeptide-68 Palmitoyl Tripeptide-8 Allantoin Sodium Hyaluronate Acetyl Glucosamine Serine Alanine Glycine Threonine Arginine Proline Betaine Sodium PCA Sodium Lactate PCA Glutamic Acid Lysine Hcl Tocopherol Dextran Glycine Soja Oil Hydrogenated Lecithin Ammonium Acryloyldimethyltaurate/Vp Copolymer Polyacrylate Crosspolymer-6 Butylene Glycol Xanthan Gum Ethylhexylglycerin Adenosine Polyquaternium-51 Disodium EDTA Citric Acid Caprylyl Glycol T-Butyl Alcohol Potassium Sorbate Sodium Oleate Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Acetyl Hexapeptide-8, Copper Tripeptide-1, Sh-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, Palmitoyl Tripeptide-8, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium PCA, Sodium Lactate, PCA, Glutamic Acid, Lysine Hcl, Tocopherol, Dextran, Glycine Soja Oil, Hydrogenated Lecithin, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, T-Butyl Alcohol, Potassium Sorbate, Sodium Oleate Propanediol Dicaprylyl Carbonate Squalane Coconut Alkanes Cetearyl Olivate Rosa Damascena Flower Water Sorbitan Olivate Palmitoyl Hexapeptide-12 Palmitoyl Tetrapeptide-7 Palmitoyl Tripeptide-1 Palmitoyl Tripeptide-5 Coco-Caprylate/Caprate Caprylhydroxamic Acid Steareth-20 Chlorhexidine Digluconate N-Hydroxysuccinimide Chrysin Cetyl Glyceryl Ether Sodium Benzoate Biotin Sodium Citrate Citronellol Geraniol Water, Glycerin, Propanediol, Dicaprylyl Carbonate, Squalane, Coconut Alkanes, Cetearyl Olivate, Rosa Damascena Flower Water, Sorbitan Olivate, Niacinamide, Acetyl Hexapeptide-8, Palmitoyl Hexapeptide-12, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Palmitoyl Tripeptide-5, Tocopherol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Citric Acid, Coco-Caprylate/Caprate, Xanthan Gum, Caprylhydroxamic Acid, Steareth-20, Chlorhexidine Digluconate, N-Hydroxysuccinimide, Chrysin, Cetyl Glyceryl Ether, Sodium Benzoate, Potassium Sorbate, Biotin, Caprylyl Glycol, Sodium Citrate, Citronellol, Geraniol 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. Ammonium Acryloyldimethyltaurate/Vp Copolymer is a synthetically created polymer. It's used as a film-forming agent and used to thicken the consistency of products. Think of it as a supportive ingredient that helps your gel-creams feel silky, "cloud cream-like", and spread evenly without being greasy. The Cosmetic Ingredient Review (CIR) Expert Panel evaluated it (along with 22 other acryloyldimethyltaurate polymers) and concluded it's: Due to its large molecular size, it sits on the surface of skin rather than penetrating it. 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). Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes. Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath. However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products. Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH. In skincare formulas, citric acid can: While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants. Most citric acid used in skincare today is made by fermenti