Benefits of Gua Sha: 1. Promotes lymphatic drainage, improve blood circulation and skin tone. 2. Help maximize the absorption of the facial oil, serum, cream or moisturizer. 3. Reduce puffiness of the skin, helps reduce the look of dark circles. 4. The Gua sha board will brighten complexion, tighten pores and help reduce the appearance of fine lines and wrinkles. 5. Help you to relax and calm the muscle tension. PLEASE NOTE: Each GUA SHA BOARD might has slightly difference in color, vein, lines, shape or small pit due to they are natural stones. For any quality issue/defective product questions, PLEASE DO NOT HESITATE TO CONTACT US.