Snow Fox Skincare Black Gua Sha (Hot Stone) ¥6050 (tax included) Used a few times. The instruction paper has some creases. Please purchase if you don't mind some minor scratches. Product Description The obsidian used in the Black Gua Sha is a glassy power stone created when volcanic lava cools rapidly. Born from a volcano, it retains warmth for a long time, making it ideal as a hot stone for massage. Massaging after placing the Black Gua Sha in a cup of hot water beforehand will increase the soft warmth containing the deep infrared rays of the Black Gua Sha. The "comb" shape of the gua sha has been refined over thousands of years in ancient China, and has the optimal shape for conditioning the face. The design allows for two patterns of approach: four touch point surfaces and a flat surface. The thin thickness achieved by hand carving stimulates the skin's pressure points, tightening the skin and also providing a lifting effect. Resale. #SnowFoxSkincare #BlackGuaSha #GuaSha