Our 3 Lbs sealed bag lasts for a long time. It is used to cover large areas, such as your back (underneath the fitted sheet) or bandaged to for example your belly. Our customers, as well as our own experiences show the following efficacies: General body injuries https://homeocan.ca/en/clay-benefit-body-face-hand/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6628958/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5651919/ Back pain Far Infrared Radiation for various…