Guasha means toxins are being brought to the surface by the rubbing, thus promoting circulation. Guasha also applied in anti-age. is beneficial to your skin beauty and body health. releasing tension, and reenergizing your metabolism. These Gua sha / face roller are made from stainless steel, durable and easy to clean. Practicing Gua Sha correctly can help reduce sore of your shoulder, neck, hand, leg, fingers, etc.You will feel comfortable and smooth when holding and using, will not hurt your skins. It is designed for small and medium-sized body parts, such as the neck, face, back, hands, wrists, shoulders and feet to relieve pain and tension. Ideal for chiropractors, occupational therapists, physical therapists, sports coaches or massage therapists. Specification: Shelf life: 4 years Size Chart: 29x19x19cm/11.42x7.48x7.48inch Package Includes: 1 Piece Scraping Board