Discover C-Tetra Advanced, the latest innovation from Medik8: a high-performance vitamin C serum formulated with 20% tetrahexyldecyl ascorbate, a stabilized and effective form of vitamin C. Its action is enhanced by the synergy of intelligent phytoexosomes, capable of precisely releasing active ingredients while respecting the skin barrier, and with acetyl zingerone, a powerful antioxidant that neutralizes free radicals and protects against environmental aggressors. Clinically proven to improve skin radiance and smoothness in just 7 days, C-Tetra Advanced brightens, evens out skin tone and visibly combats signs of premature aging. Its light gel-serum texture absorbs quickly, leaving skin refreshed, hydrated and ready for the next day. Recommended for those looking for visible results without compromising the health of the skin barrier. Ideal for all skin types, even the most sensitive, combination and oily. Composition Water, Tetrahexyldecyl Ascorbate, Isododecane, Propanediol, Acetylglucosamine, Squane, Tocopherol, Acetyl Zingerone, Camellia Sinensis (Green Tea) Leaf Vesicle, Hydroxyacetophenone, Sodium Hyaluronate, Cellulose, Avena Sativa (Oat) Kernel Extract, Glycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Citrus Grandis (Grapefruit) Peel Oil, Sucrose Stearate, Tetrasodium Glutamate Diacetate, Ethylhexylglycerin, C10-30 Alkyl Acrylate/Acrylates Crosspolymer, Xanthan Gum, Sodium Benzoate, Cellulose Gum, 1,2-Hexanediol, Polysorbate 60, Sorbitan Isostearate, Citric Acid, Phenoxyethanol, Citral, Linalool, Limonene. Instructions for use Apply in the morning to clean skin. Massage onto face, neck and décolleté. Follow with a moisturizer and then sunscreen. Use daily for best results. Pharmaceutical consulting Avoid contact with eyes. If product comes into contact with eyes, rinse thoroughly with water. If irritation occurs, discontinue use. If irritation persists, consult a doctor. Use only as directed and on intact skin. A patch test is recommended before use. Keep out of reach of children. Recommended for use with daytime sunscreen and nighttime vitamin A to complete the CSA MEDIK8 routine.