Gua sha is a modality in traditional medicine that has been passed down for thousands of years from generation to generation in households with this medical grade stainless steel gua sha heart. No chips, no breakage. A hypo allergenic substance that glides so effortlessly that require very little to no oil or serum. Tool can be sanitized between use. Facial gua sha helps to encourage blood circulation supports lymphatic drainage depuff skin and firm the look of skin helps to relieve facial muscle tension. Ingredients: Medical Grade Stainless Steel.