"I know the cure for everything: Salt water...in one form or another: Sweat, tears or the sea." –The Deluge at Norderney, from Seven Gothic Tales, 1934
I would trust Baroness Karen von Blixen-Finecke - or, if we're to go by one her better-known pen names, Isak Dinesen (author of Out of Africa and Babette's Feast, the latter of which I am personally crazzzzy about) - on this one. No doubt about it: salt water, in one or several of its forms, will cure what ails you. Sea salt will also do all sorts of other things, all of them practically alchemical or just plain regular magic.