Detox bath 1. Add 2 cups epsom salt to your bath water. Get the water as hot as you can stand it. Were looking to create a nice sweat! 2. If your bath water is not filtered, add 1 cup of baking soda. This helps neutralize the chemicals as well as increase mineral absorption. 4. Immerse yourself in the water, allll the way up to your neck. Soak for at least 20 mins.