Trim wicks to 7mm before each use using scissors or a wick trimmer. If wicks are too short the wax may not burn all the way to the edge (tunneling), and if too long the wicks may appear to mushroom causing black soot to form on the glass.
Place candle in a non-draughty area, away from small children, pets and flammable material.Do not burn for less than one hour or more than four hours at a time.