What are they and how are they used? Pieces of perfumed wax, rich in natural essential oils, are dissolved and used in aroma therapy to spread delicate relaxing and/or balancing fragrances or rich energizing fragrances into the environment in which we live. What you need: an essence burner, tealight candles, cheerful melts (3 to 5 pieces). You can use a single fragrance or mix the scents you like the most. Cheerful Candle wax in 6 cubes, made in the USA, 100% natural. 1.9 oz 27 FRAGRANCES AVAILABLE