Why it's special? Our Gua Sha Scraping Massage Tools are made of high borosilicate glass. Preventing skin from losing elasticity and promoting blood circulation. Guasha massage tool work well in different areas of the body, the smaller board can activate trigger points or reach body areas that are difficult to stimulate. Offer the most complete massage therapy to your whole body. How to use? Place Gua Sha in the refrigerator (32-40°F or 0-4 °C) for 10 minutes prior to use. Gua Sha over the face in a slow gentle motion, giving extra attention to any areas with inflammation or redness. Best results are seen when paired with a facial oil, serum, or hydrating mask. Repeat each movement 3-5 times for ice cold self-care.