Since they’re made from vegetable oil (soybeans). On the other hand,paraffin candles are made from petroleum oil.
Soy candles burn 50% longer
Therefore, even though soy wax candles are sometimes more expensive than paraffin wax candles to buy, they are still more cost-effective in the long run. Furthermore, soy candles burn evenly, leaving almost no excess wax on the sides of the jar.
Soy candles burn cleaner
As a result, they don’t produce much black soot like paraffin candles do. Candle soot is more of a nuisance than you might realize. If you burn a lot of candles, over time it can discolor your walls & furniture and stain the edges of your carpet!
Soy candles are non-toxic
Since they are made of vegetable oil, have a lower melting point (so the wax itself doesn’t get as hot), produce negligible amounts of soot, and release no known carcinogens into the air. Plus, they clean up easier (just use soap and water) when the wax is spilled.
The scent from soy candles is much stronger
Because of the lower melting point of soy wax, there is a larger amount of the liquid wax pool around the candle wick itself. It is from this liquid wax pool and the wick itself that the essential oils evaporate into the atmosphere.