It has helped brighten my complexion already and seems to be very good for the price. The three stars is due to being already oxidized when I received it; I am using it on my arms as well as my face and neck to make sure that I use all of it before it goes bad. I don't blame Jolse because it is unavoidable when shipping something all the way from Korea but I have already purchased an MAP based serum to replace it to avoid oxidation problems.