1Exquisite Craftsmanship With a smoothly surface and rounded edges, this gua sha tool is very skin friendly and prevents scratches during use. Designed with ergonomics in mind, it is easy to grip and apply, providing a comfortable and effective experience. 2Hot and Cold Compress: Made from Terahertz stone, known for its superior thermal conductivity that increases circulation and metabolism. Its rapid temperature absorption provides exceptional advantages for both warm (relaxing muscles and opening pores) and cold (contracting muscles and pores) compresses. 3Tightening and Anti Aging: Gua Sha massage can help to tighten skin, reduce fine lines and wrinkles, promote the absorption of skincare products and alleviate puffiness, bags, and dark circles under the eyes. Stay young and vibrant with regular use. 4Lymphatic Detox: Terahertz stone contains various trace elements needed by the human body, thus enhancing vitality. It hastens skin regeneration and detox, improves skin elasticity, and helps the lymphatic system remove the body waste products. 5Relief and Health: Guasha massage tool helps alleviate tension and irritability, relieve daily muscle soreness, headache, and cervical problems. Therefore, it contributes positively to your physical and mental health, promising a healthier lifestyle. 6Healthier Hair through Scalp Massage: Gently massaging the scalp with this tool can relieve fatigue from within, boost scalp circulation, improve hair and scalp health, and promote better sleep.