Spazazz Tropical Rain Crystals create a soothing experience in your spa. There aren't many more things in this world that are as relaxing and mellow as the scent of tropical rain. Crystals set the mood, arouse emotion, and relax your state of mind. Simply add a few capfuls of crystal to your spa or bath to attain your desired aroma level. Spazazz products are spa safe, oil-free, and will not cause problems with plumbing or damage equipment. They can be used in any hydrotherapy environment as well as spas, hot tubs, Jacuzzi's, and whirlpool baths.