- Sandra Lanshin Chiu,an acupuncturist who founded a healing studio, Lanshin Gua sha pronounced gwa-shah! is a tool or tools used to scrape the skin to promote circulation. Ancient Chinese medicine utilized the gua sha tool thousands of years ago to increase blood circulation and heal the body. If you want to do Gua Sha at home, remember that there are different shapes of Gua Sha tool... https://samsbeautyroom.net/