First and foremost - the wax will not burn you; the special natural wax blend has a very low melting point of around 45C which is like warm bath water.
Light the candle and allow to burn for ten minutes or until a pool of wax forms. When a pool of wax appears, blow out the flame and wait for a minute or so (some experienced massage therapists use the wax while the candle still burns). The wax will be warm but not hot enough to burn the skin. Now you can pour directly from the jar on to the skin. The warm oil creates an especially tactile and sensual experience.