Gua sha is the therapeutic scraping of skin with a tool, usually ceramic, lubricated with oil or water-based lotions. It is used by acupuncturists as an adjunct to help with chronic inflammation and pain and/or to reduce fever. It leaves temporary dark marks on the skin, and is similar in sensation to frictioning techniques in massage therapy. Research has demonstrated a whole-body anti-inflammatory, anti-oxidative and anti-allergic effect from Gua Sha.