Take a lot of vitamin C. If I get 4,000 mg a day (4 of the big tablets) my canker sores don't come as often, and when they do they are smaller and go away faster, and don't really even bother me. It won't make a difference immediately; it takes a couple weeks to build up in your system. But it's worth the investment, and vitamin C is something your body needs anyway.Alums are useful for a range of industrial processes. They are soluble in water; have an astringent, acid, and sweetish taste; react acid to litmus; and crystallize in regular octahedra. When heated they liquefy; and if the heating is continued, the water of crystallization is driven off, the salt froths and swells, and at last an amorphous powder remains.
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