Haven't noticed any difference yet but it does feel nice on my skin.

Really love this, looks like I'm using a vitamin C serum without the sensitivity

Honestly Cosrx products has improved my skin sooooo much, I don’t need to add much a small amount goes a long way, will be purchasing again. 

i’ve used this serum for years and it’s one of the best propolis ones i’ve tried

Really enjoy using this. First got it when my skin was really sensitive and it helped a lot. It is quite thick, but hydrating and lightweight. I also bought the toner for this!