Goodal Green Tangerine Vita C Blemish Serum

I am using the Goodal Green Tangerine Vita C Blemish Serum, which I bought on sale at Olive Young based on a friend's recommendation.

I've been using it only before bed because I think it absorbs well while I sleep. It feels refreshing, and when I wake up the next day, my skin has a subtle glow and seems to apply makeup better. It also seems to have the effect of making my skin look better overall. Since it contains vitamins, I think I need to be careful when applying it to avoid getting it in my eyes.