Enjoy the therapeutic Aromatherapy benefits of essential oils with the Lava Stone Shower Diffuser & Essential Oil 2pc. Set by Earth Luxe. The colored lava stone hangs from a water safe wax cotton cord and includes bottle of Earth Luxe Natural Essential Oil. To use, simply add 4-5 drops of the mood-enhancing essential oil to the lava stone and hang in the shower away from the water stream.