Soy wax is the cleanest burning wax for candles. Soy wax candles burn evenly and cleanly, without producing soot or toxins. This makes them a great choice for anyone who is concerned about the impact of candles on their health and the environment. In addition to being clean burning, soy wax candles also have a longer burn time than traditional paraffin wax candles, making them a great value and the most socially responsible choice.