To prepare hydrogen peroxide for a water bath, measure 1/2 to 1 cup of 35 percent hydrogen peroxide, or use 2 quarts of 3 percent hydrogen peroxide. Add the hydrogen peroxide to a warm bath while the water is running.
Food grade 35 percent hydrogen peroxide is recommended; however, if it is unobtainable, 3 percent hydrogen peroxide, found in brown bottles at drug stores, also works. If using 3 percent hydrogen peroxide, add 2 quarts to the bath, but add 1 quart at a time. Soak in the tub for about five minutes, and then add the other quart. Epsom salt and essential oils may also be added to the bath. For the best results, relax in a hydrogen peroxide bath for 20 to 30 minutes.
Some people experience mild side effects from the bath, such as diarrhea and headaches. This is likely due to the detoxifying effect of the peroxide. To avoid potential side effects, start out using smaller amounts of peroxide in the bath, and gradually increase the amount over time. Keep hair out of the water, as hydrogen peroxide has a bleaching effect. Peroxide can also dry the skin, so use lotion after bathing. Speak to a doctor before beginning any new health regimen, including hydrogen peroxide baths.