We are not doctors so we can not know. But over the years we do feel that if the concentrate does have propane or butane in it is it NOT good. Most concentrate will use these solvents, but the solvents are removed so this should be safe.
We are not doctors so we can not know. But over the years we do feel that if the concentrate does have propane or butane in it is it NOT good. Most concentrate will use these solvents, but the solvents are removed so this should be safe.