Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

COSRX Advanced Snail Peptide Eye Cream Versus Dear, Klairs Fundamental Nourishing Eye Butter

COSRX Advanced Snail Peptide Eye Cream Versus Dear, Klairs Fundamental Nourishing Eye Butter Detailed comparison of COSRX Advanced Snail Peptide Eye Cream versus Dear, Klairs Fundamental Nourishing Eye Butter. This anti-aging eye moisturizer is formulated arou

This source-based comparison does not add ratings or recommend a winner.

COSRX Advanced Snail Peptide Eye Cream Versus Dear, Klairs Fundamental Nourishing Eye Butter Detailed comparison of COSRX Advanced Snail Peptide Eye Cream versus Dear, Klairs Fundamental Nourishing Eye Butter. This anti-aging eye moisturizer is formulated around Snail Secretion Filtrate and Niacinamide to soften the look of wrinkles and hydrate skin. This anti-aging eye moisturizer is formulated around Caffeine and Acetyl Hexapeptide-8 to soften the look of wrinkles. Snail Secretion Filtrate Butylene Glycol Glycerin Helianthus Annuus Seed Oil 1,2-Hexanediol Niacinamide Water Palmitic Acid Arginine Carbomer Stearic Acid Betaine Cetearyl Olivate Sorbitan Olivate Sodium Polyacrylate Allantoin Tocopheryl Acetate Panthenol Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Sodium Hyaluronate Adenosine Xanthan Gum Myristic Acid Copper Tripeptide-1 Acetyl Hexapeptide-8 Palmitoyl Pentapeptide-4 Palmitoyl Tripeptide-1 Palmitoyl Tetrapeptide-7 Snail Secretion Filtrate, Butylene Glycol, Glycerin, Helianthus Annuus Seed Oil, 1,2-Hexanediol, Niacinamide, Water, Palmitic Acid, Arginine, Carbomer, Stearic Acid, Betaine, Cetearyl Olivate, Sorbitan Olivate, Sodium Polyacrylate, Allantoin, Tocopheryl Acetate, Panthenol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Hyaluronate, Adenosine, Xanthan Gum, Myristic Acid, Copper Tripeptide-1, Acetyl Hexapeptide-8, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7 Caffeine Phaseolus Angularis Seed Extract Artemisia Princeps Leaf Extract Camellia Sinensis Leaf Extract Chaenomeles Sinensis Fruit Extract Chrysanthellum Indicum Extract Cinnamomum Cassia Bark Extract Corallina Officinalis Extract Curcuma Longa Root Extract Diospyros Kaki Leaf Extract Melia Azadirachta Flower Extract Melia Azadirachta Leaf Extract Ocimum Sanctum Leaf Extract Oligopeptide-29 Oligopeptide-32 Pantolactone Hydrogenated Lecithin Glyceryl Stearate Sorbitan Isostearate Cetearyl Alcohol Propanediol Arachidic Acid Oleic Acid Caprylyl/Capryl Glucoside Ethylhexylglycerin Water, Glycerin, Stearic Acid, 1,2-Hexanediol, Helianthus Annuus Seed Oil, Betaine, Caffeine, Phaseolus Angularis Seed Extract, Artemisia Princeps Leaf Extract, Camellia Sinensis Leaf Extract, Chaenomeles Sinensis Fruit Extract, Chrysanthellum Indicum Extract, Cinnamomum Cassia Bark Extract, Corallina Officinalis Extract, Curcuma Longa Root Extract, Diospyros Kaki Leaf Extract, Melia Azadirachta Flower Extract, Melia Azadirachta Leaf Extract, Ocimum Sanctum Leaf Extract, Acetyl Hexapeptide-8, Copper Tripeptide-1, Oligopeptide-29, Oligopeptide-32, Panthenol, Pantolactone, Hydrogenated Lecithin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Hyaluronate, Glyceryl Stearate, Sorbitan Isostearate, Cetearyl Alcohol, Propanediol, Arachidic Acid, Oleic Acid, Palmitic Acid, Caprylyl/Capryl Glucoside, Ethylhexylglycerin 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 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. 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. 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 in its active growth phase longer. This has made it a promising ingredient for hair regrowth treatments. Some people have reported increased facial hair. While GHK-Cu can make your hair follicles bigger, it usually doesn’t turn soft, barely-visible facial hairs into thick, dark ones. Anecdotal reports suggest that overusing copper peptides might lead to premature aging due