Spazazz RX Respiratory Therapy - Relief 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 lungs and remove tension to set your body at ease. These aromatherapy crystals use moisturizing botanicals to pamper your skin, while relieving stress. Spazazz is spa safe and does not leave behind residues.