If a person follows the appropriate directions an uses a diluted amount of bleach, it is safe to take a bleach bath, as specified by Mayo Clinic. The appropriate ratio of bleach to water is one-half cup of bleach per 40 gallons of water. This amount of water fills a standard-sized bathtub.
Some additional precautions to take when taking a bleach bath are to only soak the body from the neck down, to rinse off after soaking in the water and to not take over three bleach baths per week. A moisturizer should be applied to the skin after the bath. A person can soak in this bath between 5 to 10 minutes.
A bleach bath may be useful for eczema because it may kill bacteria associated with this skin problem. It may also help with its symptoms like itchy and scaly skin. The American Academy of Dermatology suggests that parents consult with a dermatologist before giving their child this type of bath.