Bests & Worsts Reviews from Amazon

Best vitamin c serum I have used so far, have tried several VC product, including la roche-posay(10%VC also very nice feeling in the face), skinceutical cef serum (15% don’t like it, very sticky and made me broke out) , kiehls VC CONCENTRATE(12.5%, not watery, silicon technology for stability, feeling heavy in summer time, but efficient and gentle for my skin). I think this one has the best usages feeling,watery, fresh, suitable for every season.