InSPAration Wellness Soothing Cedarwood Crystals are a joy to behold. Close your eyes and let the soothing scents of natural Cedarwood calm your spirit. InSPAration products are safe for all surfaces 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.