· 1/4 to 1 cup of Bentonite Clay powder (We personal love our Lava Love Bath powder, which is pure bentonite clay powder with a dash of extra detoxifying zeolites and charcoal). And. 1 to 2 cups of Epsom Salts. What to do: Mix the above ingredients in a hot bath and stir with a wooden spoon to disperse. Let ingredients sit in bath for 10 minutes and then get in. If you are new to clay baths ...