COSRX The Vitamin C 23 Serum

This is COSRX The Vitamin C 23 Serum.

I bought this on a YouTuber's recommendation, taking a chance, and I think it's really good. Since it comes in a dropper, you can control the amount you use. It has a watery consistency, and because it is a vitamin product, it is a bit sticky and has a distinctive scent, but the light texture makes it easy to use with other products. I can feel my skin tone becoming brighter after applying it.