Airpura 400 Series Air Purifiers Select Model:V400 Vinpocetine and blueberries work to Vinpocetine and blueberries work to boost cognition by improving blood flow to the brain you can use these handy Root Touch canisters to conceal just the offending gray roots as they begin to poke through The potassium iodide assists in the desulphurization of acrid exhaust gases and the removal of the acidic contaminants like hydrogen sulfide and mercaptans associated with their "rotten eggs" smell Airpura knows the only way for a machine to truly clean the indoor air is to actually capture and trap its pollutants in an appropriate filter media – permanently