This is a serum I bought with my own money~ It's easy to apply with just a light tap.

This is COSRX The Vitamin C23 Serum.

This is a serum I've been using frequently lately. Since it's summer, I don't like heavy products, but I just dab this on after applying toner. It's neither dry nor stuffy; it feels just right. They say it's good for whitening, and since my blemishes are quite prominent, the effects aren't dramatically visible, but I think it's better than when I wasn't using it. My skin looks just a little brighter!

Still, I'm using it consistently, telling myself that it's better than nothing. It's easy to use since it's a dropper type.