??? ?? ?????????? ?? ?????? ??? ????????? ??? ?????? ?? ??????????.When niacinamide is coupled with ceramides, the skin’s ability to retain dampness increases. Your complexion will also show up softer and smoother.??? ????????, ??????? ??? ?????????? ???? ????? ?????? ??? ?? ?????? ?????????? ??? ????????? ??? ???????????????????? ??? ????????. ?