Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Kiehl's Milk-Peel Gentle Exfoliating Toner Versus Laneige Cream Skin Cerapeptide Refiner

Kiehl's Milk-Peel Gentle Exfoliating Toner Versus Laneige Cream Skin Cerapeptide Refiner Detailed comparison of Kiehl's Milk-Peel Gentle Exfoliating Toner versus Laneige Cream Skin Cerapeptide Refiner. This toner is formulated around Squalane to hydrate and su

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

Kiehl's Milk-Peel Gentle Exfoliating Toner Versus Laneige Cream Skin Cerapeptide Refiner Detailed comparison of Kiehl's Milk-Peel Gentle Exfoliating Toner versus Laneige Cream Skin Cerapeptide Refiner. This toner is formulated around Squalane to hydrate and support the skin barrier. This hydrating essence is formulated around Limnanthes Alba Seed Oil and Ceramide NP to hydrate skin and strengthen the skin barrier. Water Hydrogenated Polydecene Caprylic/Capric Triglyceride Squalane Carthamus Tinctorius Seed Oil 1,2-Hexanediol PEG-6 Caprylic/Capric Glycerides PEG-40 Glyceryl Cocoate Phenoxyethanol Sodium Coceth Sulfate Capryloyl Salicylic Acid Tromethamine Ethylhexylglycerin Citrus Nobilis Peel Oil Adenosine Limonene Caprylyl Glycol Anthemis Nobilis Flower Oil Cupressus Sempervirens Leaf/Nut/Stem Oil Prunus Amygdalus Dulcis Seed Extract Benzyl Alcohol Xanthan Gum Silybum Marianum Extract Tocopherol Dehydroacetic Acid Lactic Acid Water, Hydrogenated Polydecene, Caprylic/Capric Triglyceride, Squalane, Carthamus Tinctorius Seed Oil, 1,2-Hexanediol, PEG-6 Caprylic/Capric Glycerides, PEG-40 Glyceryl Cocoate, Phenoxyethanol, Sodium Coceth Sulfate, Capryloyl Salicylic Acid, Tromethamine, Ethylhexylglycerin, Citrus Nobilis Peel Oil, Adenosine, Limonene, Caprylyl Glycol, Anthemis Nobilis Flower Oil, Cupressus Sempervirens Leaf/Nut/Stem Oil, Prunus Amygdalus Dulcis Seed Extract, Benzyl Alcohol, Xanthan Gum, Silybum Marianum Extract, Tocopherol, Dehydroacetic Acid, Lactic Acid Butylene Glycol Glycerin Limnanthes Alba Seed Oil Isopentyldiol Polyglyceryl-10 Stearate Glyceryl Stearate Citrate Sodium Stearoyl Glutamate Inulin Lauryl Carbamate Glyceryl Caprylate Propanediol Disodium EDTA Carbomer Mannitol Acrylates/Stearyl Methacrylate Copolymer Tremella Fuciformis Sporocarp Extract Hyaluronic Acid Camellia Sinensis Leaf Extract Ceramide NP Camellia Japonica Flower Extract Acetyl Tetrapeptide-11 Water, Butylene Glycol, Glycerin, Limnanthes Alba Seed Oil, Isopentyldiol, 1,2-Hexanediol, Squalane, Polyglyceryl-10 Stearate, Glyceryl Stearate Citrate, Sodium Stearoyl Glutamate, Inulin Lauryl Carbamate, Glyceryl Caprylate, Ethylhexylglycerin, Propanediol, Disodium EDTA, Carbomer, Mannitol, Acrylates/Stearyl Methacrylate Copolymer, Tremella Fuciformis Sporocarp Extract, Hyaluronic Acid, Camellia Sinensis Leaf Extract, Xanthan Gum, Ceramide NP, Camellia Japonica Flower Extract, Tocopherol, Acetyl Tetrapeptide-11 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 Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that: The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure. Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations. Squalane is the hydrogenated and shelf-stable form of squalene (a lipid that naturally occurs in human sebum). It is an emollient and skin conditioning agent that is able to integrate seamlessly into the skin's lipid barrier without clogging pores. This is due to how structurally similar it is to what your skin already produces. Though it is mostly an emollient that helps soften and hydrate skin, it also has some humectant and occlusive action. Humectants help the skin retain moisture while occlusives seal it in, making squalane a triple-threat moisturizer. Research shows it has antioxidant capabilities that help protect against stressors like UV exposure, specifically UVA induced oxidative stress. This study also found that it supports collagen biosynthesis in human dermal fibroblasts. No clinical study has reported significant adverse effects and irritation reactions are very rare from this ingredient (even at 100% concentration). Overall, it's a fantastic ingredient for hydration and is suitable for all skin types. This depends on the source. Squalane can be derived from both plants and animals. Most squalane used in skincare comes from plants. Please note: the source of squalane is only known if disclosed by the brand. We recommend reaching out to the brand if you have any questions about their squalane. Read more about squalene with an "e". Though squalane is often called an oil, it’s technically not one. It is a hydrocarbon, meaning it is only made of carbon and hydrogen. True oils are triglycerides and made of fatty acids and glycerol. The term “oil-free” isn’t regulated so companies can define it however they want. Some exclude all oils, while others just avoid mineral oil or comedogenic oils. Squalane has a comedogenic rating of 1 from the original 1972 study that tested raw ingredients under occlusion on rabbit ears. This system is not standardized or peer-reviewed, and using the raw ingredients is very different from how diluted cosmetic formulations are used on human skin. A comedogenic rating of 1 means it is "unlikely to clog pores" according to the original rating system