Soy wax is a natural wax. It is derived from soy beans, which makes it a renewable resource. There is no harm done to the planet when making it as it is plant based rather than extracted from oil.
Soy wax is non-toxic and clean burning. It's made with no toxins, carcinogens, or pollutants, which means these candles are less likely to trigger allergies.
Soy wax is also said to burn slower than parraffin wax, so you also get a candle that lasts longer. Therefore soy wax is better for the environment and for you!