Candles and wax melts work very differently from a scent perspective! Candles use the wick and flame as a form of combustion - literally drawing the wax up the wick to be burned. This is why the wax gradually reduces. With wax melts the wax is gently heated and it is only the fragrance oil that is release into the air. The wax remains. You simply change the wax in your tealight wax burner or electric wax warmer once you notice the scent has faded - this is usually around 24 - 48 hours of burn time. This includes melting and resetting.