It is the Dioprus Centella Calming Ampoule.

I recently discovered this product and gave it a try. It is moisturizing and applies very smoothly. Since it was a brand I was unfamiliar with, I used it with some skepticism. However, it is such a good product that I regret ever being skeptical, so I wanted to recommend it. The capacity is about 100ml, so it is a large size and offers great value for money. It definitely seems to have a soothing effect.