Always let the scented candle burn until the entire surface is liquid. After blowing out the wick, center it. Before lighting the wick again, cut it with a wick trimmer. By consistently burning the scented candle in this way, the candle will burn slower and it will burn out completely.
Note: Do not place the candle in a draft or directly on a glass or marble surface. Never leave the candle unattended, and do not move or tilt it. Keep out of the reach from children.