On one of the links provided on the bath forum here, there is a link to a site where they discuss various detoxifying baths. They recommended an apple cidar bath for restoring a person's ph balance. I have this problem, even though I juice everyday and eat lots of fruits and veggies so I took the bath; poured the whole bottle in the hot tub (Bragg's raw apple cider) as the site recommended 1 cup to two quarts. I stayed in for 35 minutes or so and I got out feeling really good and relaxed. Sweated just a bit when I got dressed, but nothing major.
Overall, I just feel very warm and relaxed. Hard to say whether or not it did anything for my ph balance or not, but I feel good.