Dualfine contains two pre-mixed pouches, Kieselsol and Chitosan. It works by creating both strong negative and positive charges which allow for larger yeast clumping an faster clearing. Kieselsol electrostatically binds with positively charged proteins to initiate flocculation. Chitosan is basically a very large carbohydrate. Use after fermentation is complete following the directions on the package. Clearing should be complete in less than a week. Dualfine clears beer, wine, mead, cider, spirits, and wine.