Medik8 C-Tetra® Luxe Lipid Vitamin C Enhanced Radiance Serum Versus Estée Lauder Advanced Night Repair Synchronized Multi-Recovery Complex Serum

Medik8 C-Tetra® Luxe Lipid Vitamin C Enhanced Radiance Serum Versus Estée Lauder Advanced Night Repair Synchronized Multi-Recovery Complex Serum Detailed comparison of Medik8 C-Tetra® Luxe Lipid Vitamin C Enhanced Radiance Serum versus Estée Lauder Advanced Night Repair Synchronized Multi-Recovery Complex Serum. This brightening serum is formulated around Tetrahexyldecyl Ascorbate and Squalane to brighten dull-looking skin and fade the look of dark spots. This barrier-repair serum is formulated around Bifida Ferment Lysate and Sodium Hyaluronate to strengthen the skin barrier and soften the look of wrinkles. Squalane Simmondsia Chinensis Seed Oil Tetrahexyldecyl Ascorbate Dimethicone Candida Bombicola/Glucose/Methyl Rapeseedate Ferment Citrus Grandis Peel Oil Ethyl Linoleate Passiflora Edulis Seed Oil Tocopheryl Acetate Helianthus Annuus Seed Oil Olea Europaea Fruit Oil Panax Ginseng Root Oil Prunus Amygdalus Dulcis Oil Prunus Armeniaca Kernel Oil PPG-12/Smdi Copolymer Limonene Citral Linalool Geraniol Squalane, Simmondsia Chinensis Seed Oil, Tetrahexyldecyl Ascorbate, Dimethicone, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Citrus Grandis Peel Oil, Ethyl Linoleate, Passiflora Edulis Seed Oil, Tocopheryl Acetate, Helianthus Annuus Seed Oil, Olea Europaea Fruit Oil, Panax Ginseng Root Oil, Prunus Amygdalus Dulcis Oil, Prunus Armeniaca Kernel Oil, PPG-12/Smdi Copolymer, Limonene, Citral, Linalool, Geraniol Water Bifida Ferment Lysate PEG-8 Propanediol Bis-PEG-18 Methyl Ether Dimethyl Silane Methyl Gluceth-20 Glycereth-26 PEG-75 Butylene Glycol Adansonia Digitata Seed Extract Tripeptide-32 Sodium Hyaluronate Faex Extract Lactobacillus Ferment Cola Acuminata Seed Extract Anthemis Nobilis Flower Extract Hydrolyzed Algin Pantethine Caffeine Lecithin Sodium Rna Bisabolol Glycerin Oleth-3 Phosphate Caprylyl Glycol Oleth-3 Oleth-5 Choleth-24 Hydrogenated Lecithin Jojoba Wax PEG-120 Esters Ceteth-24 Carbomer Triethanolamine Tetrasodium EDTA BHT Xanthan Gum Potassium Sorbate Disodium EDTA Phenoxyethanol CI 14700 CI 19140 Water, Bifida Ferment Lysate, PEG-8, Propanediol, Bis-PEG-18 Methyl Ether Dimethyl Silane, Methyl Gluceth-20, Glycereth-26, PEG-75, Butylene Glycol, Adansonia Digitata Seed Extract, Tripeptide-32, Sodium Hyaluronate, Faex Extract, Lactobacillus Ferment, Cola Acuminata Seed Extract, Anthemis Nobilis Flower Extract, Hydrolyzed Algin, Pantethine, Caffeine, Lecithin, Sodium Rna, Bisabolol, Squalane, Glycerin, Oleth-3 Phosphate, Caprylyl Glycol, Oleth-3, Oleth-5, Choleth-24, Hydrogenated Lecithin, Jojoba Wax PEG-120 Esters, Ceteth-24, Tocopheryl Acetate, Carbomer, Triethanolamine, Tetrasodium EDTA, BHT, Xanthan Gum, Potassium Sorbate, Disodium EDTA, Phenoxyethanol, CI 14700, CI 19140 These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 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. The overall formula of a product matters more than the individual ingredients on whether or not it will cause clogged pores. Tocopheryl Acetate is a stable, shelf-friendly form of vitamin E. Formulators love it because plain vitamin E oxidizes quickly once it hits air. This acetate version stays stable and resists going off, helping to extend a product's shelf life. It's actually inactive on its own and works like a slow-release "storage" form; the enzymes in your skin called esterases gradually convert it into active vitamin E over time. One in vivo study showed 5% of the acetate in the living layer of the epidermis converted to vitamin E after 5 days of application. This study also found the skin gained protection against UV damage