Smoking candle or the black soot build up
around the rim of the vessel can be caused by a wick that’s too long or a
candle that has been burning for longer than 3-4 hours.
If your candle is smoking, extinguish and trim
the wick.
If your candle has black soot build up, extinguish
and wait till the wax has gone hard. Using a baby wipe or damp paper towel,
wipe the inside rim of the glass to remove any soot build up and leave your
candle looking as good as new.