I recommend Medicube Triple Collagen Serum.

I really like the collagen essence serum. It is moisturizing, absorbs well, and spreads nicely. My skin used to be very dry, but this isn't sticky and is great.

Medicube is famous these days for Yoo Jae-suk's commercials.

I couldn't use it because it was expensive, but I bought it cheaply during an event.

I know why it's expensive. My skin proves it.