InSPAration Tranquility Aromatherapy enhances any spa experience by filling the air with a soothing blend of herbs and wildflowers that will calm even the most frayed nerves. Its unique formula can be added directly to spa water without fear of foam buildup, and is compatible with all types of hot tub and spa surfaces. Best of all, Tranquility Aromatherapy contains moisturizers to keep bathers skin silky smooth regardless of how long they spend soaking.