Wax melts are essentially a candle without a wick. Place one cube in the top of a wax warmer where it will melt to release the scent. Our wax melts hold an abundance of fragrance and will last up to 20 hours, but unlike a candle, the wax does not burn away. Once you can no longer smell the fragrance you can throw the old wax away and start a new cube. It is important to use a warmer which is specifically designed for wax melts because any other type of warmer could reach temperatures much higher than designed for wax melts.