InSPArations aromatherapy crystals area ready to use blend of aromatherapy crystal specifically formulated for Spas, Hot Tubs, and Jetted Baths. Enhanced with Vitamins, Minerals, and Natural Extracts, InSPAration’s special formula leaves skin soft and tired muscles rejuvenated. Masks chemical odors and will not stain or harm woods, fiberglass, acrylics, or plaster. Has no oils and will not clog filters or affect water chemistry. Use as directed, refer to your spa manufacturer’s instruction manual and warranty for proper usage.