The ECO LUX cotton wick is a core less zinc and lead free, flat wick made with stabilizing threads which makes these wicks produce less smoke and carbon build-up and virtually self trimming producing less mushrooming! We found that the flat + rigid braided wick burns a tighter controlled flame, which helps ensure that glass containers don’t overheat on one side. For Use In: All waxes and candle gel. Works great in all types of candles - tea lights, votives, containers and pi