Brand from South Korea: COSNORI. Benefits:Infused with 25% pure Vitamin C (Ascorbic Acid), this ampoule helps brighten dull skin, from overall tone to blemishes.Clinically proven to decrease dark spot and blemish area by 29.55% and increase lightness value by 1.32% in just 2 weeks.Enriched with synergistic brightening ingredients: Vitamin E (Tocopherol) to help prevent moisture loss and Ferulic Acid to enhance the stability and performance of Vitamins C and E.Designed with an airtight blocking cap to minimize air exposure, keeping the easily oxidized Vitamin C fresher and safer.This tested low-irritation product provides gentle skincare without concerns and is suitable for sensitive skin.How to use:After cleansing and applying toner, take a moderate amount by the dropper and gently apply on skin for absorption.