All of our candles are made from 100% local Canadian beeswax. No paraffin wax fillers or coconut oil additives. Beeswax releases negative ions when it burns. Pollen, dust, dirt, and any other junk in the air all carry a positive charge, and that is how they can be suspended in the air. The negative ions released from burning beeswax negate the positive charge of air contaminants, and the neutralized ions are sucked back into the burning candle or fall to the ground. Many air purifiers and water filters harness this effective negative ion technology. Beeswax will burn clean and with no or very little soot. The wax is environmentally friendly, non-toxic and bio degradable. 3-3.5 Hours burn time