All the skin ever needs is moisture exfoliation of dead skin which, by the way, is very normal. some other factors such as brightening are added advanteages of what mother nature has to offer. This, however, does not disregard the manufactured ones as the are equally good since they were placed into existance by peoplewho did endless research on what in the natural product brings the change forth and extracted it to minimize risk of being advesly affected by the remaining ones.