Bon Estis Diamond Repair Perfect Serum

It's the Bon Estis Diamond Repair Perfect Serum. I heard it's famous as Song Yoon-ah's cosmetic product.

It has anti-wrinkle and brightening functions. The texture is somewhere in the middle—not too watery and not too runny. It applies well and absorbs nicely. It leaves the skin feeling hydrated and radiant, and the scent is subtle and pleasant.