09.06.16
Very good
Smells literally like orange you guys. not only they brighten up my face throughout the day, but also the dark spots from acne scars .
01.22.18
Effective

Love that it arrives sealed separately from the dropper. Has helped with hyper pigmentation.6183ae303080148f388bb83712432cbd_1516600 

04.06.17
Good

Good serum. My skin is a little bit brighter. Maybe using in long time will have better effect. 

07.12.17
Highly raved

This product has been talked about a lot in the beauty community and I see why. It is an excellent vitamin C serum. My advice is to use this right away. I bought a back up of this and left it stored for a while, when I opened it sadly it has gone bad so you have to be careful and follow the storage instructions.

02.04.17
Lightens my dark spots

I've been using this for more than a month now, and I did notice a bit of lightening. Maybe if I will continue it, (or if I try the C.21 one?) I'd see more visible results. I was afraid it'd be harsh on my skin, but other than some heat, I didn't feel any stinging at all.