Author Hannah-Rose Yee explained her grandmother’s gua sha ritual in Stylist magazine: “To this working day, she takes her gua sha and methodically runs it above her experience in easy, stylish motions each evening. I was obsessed with this ritual as a baby. I would sit at the foot of her bed and enjoy her, rapt, as she smiled at me in the mirror’s reflection. She as soon as gave me the gua sha to hold, and I don’t forget how chilly and hefty it felt in my fingers. When I got more mature, she confirmed me how to do it myself. Nowadays, I do a gua sha ritual of…