Brand from South Korea: medicube. Benefits:This one-day ampoule is formulated with a 99% high-purity Salmon PDRN that can be adhered to the skin freshly with the narrow and thin nozzle.Dermatologically tested on dull and dark skin brighter after the two weeks.58.7% increased moisture amount, 38.8% increased glowness, and 0.484 increased skin density.Consist of eye drop active ingredients including seven types of Hyaluronic Acid and Carbomer.Hypoallergenic tested for the sensitive skin. How to use:1. Open the serum by twisting the cap, and use it on the face after the toner.2. If there is a remaining amount, please use it within a day.