I think the reason that switching to soy wax candles has caught on so quickly is because the results can be seen when burning a soy candle compared to a paraffin candle. Soy candles burn completely and evenly, and when burned correctly, you are not left with a tunnel down the center of your candle and half of the wax unmelted once you finish burning your candle, like most paraffin candles. Soy candles also do not generally produce the ugly black smoke that paraffin candles do. (Note: All candles can produce soot & smoke if the wick is too high). The smoke is due to the fact that paraffin candles are made from petroleum products, which creates a sooty & smoky burn not related to the wicks, but to the wax. Soy wax candles on the other hand are made from soy beans which are an organic vegetable product and do not emit black smoke when burned.
I thank you and the planet thanks you too!