???????? ??… ??? ?? ????????????? ??? ????? ?????? ?? ??????????.??????????? ???? ?????????? ???????? ?????????? ???? ????? ??????.?? ????? ?? ceramides ??? ?? ?????????? ???? ?????????? ????????, ???????? ???? ???????? ?????????? ??? ??? ????????? ??? ?????????.When ceramides are exposed to light and UV rays, they could become unstable and reduc