What is Black Salt used for Spiritually? Black salt is so good for many different uses What is black salt used for spiritually? Black salt is an ancient magic recipe of simple preparation that can eliminate negative energy from your home or business, ward off unwanted guests and prevent them from returning again, and protect you or your home from the influences of third parties such as family or unwanted neighbors. You can use it to drive away rivals, insufferable coworkers, and all those unplea