• Always store candles in a cool, dark, dry place. Tapers and dinner candles should be stored flat to prevent warping.
  
  
• Clean solid candles with a piece of nylon or a dry or damp soft cloth.
  
  
• Remove wax from holders by running very hot water over them. Alternatively, some individuals suggest placing the candle holder in the freezer. This will allow the wax to shrink and easily pop off when the candle holder is removed from the freezer.
  
  
• Never use a knife or a sharp object to remove wax drippings from a glass holder; it might scratch, weaken, or cause the glass to break upon subsequent use.
  
  
• Votive candles will clean easily if you add a few drops of water to the glass before inserting the candle. Caution: Do not add more than a few drops and do not add water unless you intend to burn the candle immediately afterward. Over time, a candle wick could absorb the water and no longer burn properly.
  
  
• Candles will fade if left in the light for an extended period of time. Never put candles in a window or directly expose to bright outdoor light or indoor spotlights.

Information from the National Candle Association