I recommend Torriden Dive-in Low Molecular Hyaluronic Acid Serum.

I saw a famous celebrity buy this with their own money and thought, "My gut feeling was right." It is incredibly moisturizing, and when I wake up, my skin feels soft and hydrated. My skin texture feels completely refined, and I had actually been using it even before that celebrity recommended it. It really feels like my skin is becoming clean. The dropper makes it convenient, and isn't the color even refreshing? Hyaluronic acid is the number one contributor to such hydration, and perhaps because it is a Torriden product, it feels gentle. Although it is a serum, I use it like an ampoule, instead of toner, or just apply it at night before bed—it’s amazing.