COSRX Vitamin C 23 Serum - 20ml

Highly concentrated serum that removes acne scars and brightens skin tone to revitalize dull, dry skin. Concentrated at 23%, this highly concentrated serum brightens and restores dull skin to its radiance. A stable and hypoallergenic formula that breaks the preconception that pure vitamin C causes irritation. A two-layer formula with an oil layer on top to maintain freshness and delay oxidation. Fragrance-free How to use: After cleansing, during the serum phase, gently shake the bottle once or twice from side to side and apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the inside of the face towards the edges. *For first use, attach the dropper provided in the product package. * It is recommended to use it within two months of opening due to the protection of the active ingredients.  * Should the highly concentrated serum be used in the evening only? This serum can be used in the morning, if applied in the morning, make sure to use it with an SPF of 30 or higher.