- Chosen by Voters Generally you only need a sea salt soak for any area that is injured such as a piercing site, and you can do that with a quarter teaspoon of sea salt in a cup of warm water, and use cotton balls. It helps to soothe and to clear up and prevent minor infection. To have an actual full body bath go to the pharmacy and buy epsom salts and read the directions on the package and that would work. 8 months ago 100% 2 Votes