About This Natural Terahertz Stone: Gua Sha, a traditional Chinese Scraping Therapy. When combined with terahertz , this practice takes on a whole new level of effectiveness. Face & Eye Massager: It has comfortable massage effect. Cool it down and use it to help reduce puffiness and puffy eyes. Quick Cold or Heat: Immerse it in hot or cold water for 5 seconds to enjoy the benefits of hyperthermia and cold therapy. It's a simple solution to promote skin relaxation. Unique Idea: Give glowing skin with our face massager. Perfect for any skincare routine, it provides a spa-like experience at home. Use tips: Before the first use, you can wash the guasha massage tool in the warm water and wipe it with a soft cloth, and it’s best to wipe it with a wet cloth after every use. Overview Use for : Face Power Source : manual/hand-powered motion Material : Terahertz Item Weight : 60 Grams Brand : InfiniteRelax