Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Dear, Klairs Supple Preparation Unscented Toner Versus COSRX The 6 Peptide Skin Booster Serum

Dear, Klairs Supple Preparation Unscented Toner Versus COSRX The 6 Peptide Skin Booster Serum Detailed comparison of Dear, Klairs Supple Preparation Unscented Toner versus COSRX The 6 Peptide Skin Booster Serum. This hydrating toner is formulated around Glycyr

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Dear, Klairs Supple Preparation Unscented Toner Versus COSRX The 6 Peptide Skin Booster Serum Detailed comparison of Dear, Klairs Supple Preparation Unscented Toner versus COSRX The 6 Peptide Skin Booster Serum. This hydrating toner is formulated around Glycyrrhiza Glabra Root Extract and Centella Asiatica Extract to hydrate skin and calm redness. This anti-aging serum is formulated around Niacinamide and Acetyl Hexapeptide-8 to soften the look of wrinkles and strengthen the skin barrier. Water Butylene Glycol Dimethyl Sulfone Betaine Caprylic/Capric Triglyceride Disodium EDTA Glycyrrhiza Glabra Root Extract Centella Asiatica Extract Chlorphenesin Tocopheryl Acetate Glycerin Arginine Carbomer Panthenol Luffa Cylindrica Fruit/Leaf/Stem Extract 1,2-Hexanediol Hydroxyethylcellulose Aloe Barbadensis Leaf Extract Althaea Rosea Flower Extract Portulaca Oleracea Extract Polyquaternium-51 Beta-Glucan Lysine Hcl Sodium Ascorbyl Phosphate Sodium Hyaluronate Acetyl Methionine Theanine Proline Natto Gum Disodium Phosphate Polysorbate 60 Sodium Phosphate Copper Tripeptide-1 Water, Butylene Glycol, Dimethyl Sulfone, Betaine, Caprylic/Capric Triglyceride, Disodium EDTA, Glycyrrhiza Glabra Root Extract, Centella Asiatica Extract, Chlorphenesin, Tocopheryl Acetate, Glycerin, Arginine, Carbomer, Panthenol, Luffa Cylindrica Fruit/Leaf/Stem Extract, 1,2-Hexanediol, Hydroxyethylcellulose, Aloe Barbadensis Leaf Extract, Althaea Rosea Flower Extract, Portulaca Oleracea Extract, Polyquaternium-51, Beta-Glucan, Lysine Hcl, Sodium Ascorbyl Phosphate, Sodium Hyaluronate, Acetyl Methionine, Theanine, Proline, Natto Gum, Disodium Phosphate, Polysorbate 60, Sodium Phosphate, Copper Tripeptide-1 Dipropylene Glycol Pentylene Glycol Niacinamide Acetyl Hexapeptide-8 Sh-Polypeptide-121 Dipeptide Diaminobutyroyl Benzylamide Diacetate Oligopeptide-68 Palmitoyl Tripeptide-8 Allantoin Acetyl Glucosamine Serine Alanine Glycine Threonine Sodium PCA Sodium Lactate PCA Glutamic Acid Tocopherol Dextran Glycine Soja Oil Hydrogenated Lecithin Ammonium Acryloyldimethyltaurate/Vp Copolymer Polyacrylate Crosspolymer-6 Xanthan Gum Ethylhexylglycerin Adenosine 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 These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse. It is a: Humectant, drawing moisture into the skin Emollient, helping to soften skin Solvent, dispersing and stabilizing formulas Preservative booster, enhancing the antimicrobial activity of other preservatives Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources. It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy. Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces. A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks. Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis. One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies. Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne. Betaine is a humectant. Like hyaluronic acid, it helps attract and retain moisture in the skin. It’s known for being gentle and for helping the skin maintain balanced hydration. Betaine is mainly used to improve hydration and support calmer skin. It helps skin cells regulate water balance because it functions as an osmolyte. Some studies suggest betaine may support making skin tone more even. Fun fact: Betaine naturally exists in the skin and the body. In cosmetic products, it can be either plant-derived (most commonly from sugar beets) or synthetically produced for consistency and stability. Betaine is also known as trimethylglycine. 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. Copper Tripeptide-1 (GHK-Cu) is a skin repairing ingredient known for its ability to boost collagen, improve firmness, and support skin regeneration. It is a complex made up of a naturally occurring peptide (glycine-histidine-lysine) and copper, an essential trace element. While studying wound healing, researchers noticed GHK-Cu stimulated hair follicle enlargement and growth by keeping hair