Birch Oil: a liquid ester with a robust odor of wintergreen; used externally for minimal muscle mass and joint discomfort. ?????? ?? ???? ?? ??? ???? ???????? ????? ? ?? ????? ???? ?? ??? ??? ??? ????? ??? ? ??? ??? ?? ???? ?? ??? ?? ? ??? ??? ??? ???? ?? ??? ?? ??????? ???? ??? on the lookout like a little sprig from an evergreen tree the great