This topic is about the benefits of adding a Himalayan salt wall or salt cave to a salon or spa. It discusses the reasons why spa owners are adding these salt walls, such as calming nerves, improving mood, and boosting physical and psychological health. The article also explains how to add a Himalayan salt wall to a spa or salon, and how it can improve the business. The article also covers the differences between a salt room and a salt cave, as well as how to create a salt wall at home or in a business.