Scalp Gua Sha is ancient technique from Chinese medicine that involves massaging the scalp in a “scraping” motion to improve overall hair-follicle health, in addition to increased absorption of topical hair products and treatments. Made from Nephrite and Obsidian, the theory behind the scalp Gua Sha is that it increases blood flow and lymphatic circulation which may help with flaky and dry scalp, hair thinning, dandruff, and scalp build-up. Our brush works with all hair textures and types. Every tool includes an instruction card and velvet storage bag.