A candle made from soy wax burns cleaner with little soot released as the candle burns. ... The soy candle may accumulate some black soot on the jar, but the amount is much less than paraffin candles. Soy candles are also non-toxic, so they won't release toxins into the air as they burn.
Why try a Wooden Wick?
Wood wicks are a bit different than a traditional cotton wick- they burn longer, cleaner, and create a charming crackling sound. But, they do require a bit of extra care. ... The shorter the wick, the better the flame. If the wick is too long, it won't pull the wax and will extinguish quickly.