Denicool. Put some crystals into the bottom of the pipe bowl, then fill the bowl with tobacco as usual. After enjoying the smoke empty the pipe together with the crystals. Denicool will have changed its color to dark brown because it is saturated with condensate. This proves its high efficiency as an absorbant. Denicool filter crystals ensure a cool, mild and dry smoke. They reduce tar and nicotine and absorb additional humidity while keeping the flavor of the tobacco.