1) Store the candles in a cool, dry dark place. Keep candles out of sunlight or other places where they may heat up such as by a stove. This will keep them from melting unintentionally. Store tapered or dinner candles flat to help prevent them from warping so that you can use them longer.
2) Trim the candles wick to 1/4" before burning the candle. This will help produce the ideal flame that will burn your candle the most efficiently. The flame should have a steady tear-drop shape and it shouldn't flicker or smoke erratically. Blow it out, let it cool and trim the wick if the flame gets out of control.
3) Place your candles in your freezer before burning them. This is a short term solution, because the candles will heat up quickly. This is a good way to slow the burn on candles you use for dinner light or other short applications. Wrap the candle in foil to keep the wick from getting moist.
4) Keep candles away from drafty areas. Drafts can cause candles to burn unevenly which will affect the life of your candle.
5) Put scented candles that do not have a jar into sealed containers to help retain the fragrance.
6) Buy a candle warmer and place your candles on it instead of burning them. This is good for scented jar candles so that you can enjoy the fragrance without the smoke and the candle will last longer.
Remember number 6 our candles are not recommended to put on a candle warmer..