Spazazz RX Sleep Therapy - Rejuvenate Crystals are part of a new line entirely designed around soaking and soothing away various aches and pains. Use these RX crystals to help relax your muscles and remove tension to set your body at ease. These aroma therapy crystals use moisturizing botanicals to pamper your skin, while relieving stress. Spazazz is spa safe and does not leave behind residues.