A warm bath can be a comforting ritual for some people: less noise, a change of setting, and a few minutes without another task. Epsom salts are often marketed as though they reliably deliver magnesium through the skin or treat pain, but those benefits should not be assumed.
Separate the ritual from the promise
You do not need an additive for a bath to feel pleasant. If you use a bath product, follow its label and avoid it if it irritates your skin or conflicts with clinical advice. Do not ingest bath salts or use them as a substitute for treatment.
Warm water is not comfortable or safe for everyone. Heat may worsen dizziness or POTS symptoms, and reduced skin sensation can make temperature difficult to judge. Ask your care team about bathing if you have wounds, circulation problems, neuropathy, or a history of fainting.
Plan the getting out, too
Consider safe transfers, appropriate grab bars or bathing equipment, and someone nearby if you need assistance. Avoid locking yourself into a situation where help cannot reach you. Keep the room comfortable and stop if you feel unwell.
A seated wash or another quiet ritual may be a better option on some days. You are not missing a necessary wellness treatment by skipping a bath. Comfort can be simple, inexpensive, and entirely free of claims that your body needs to respond in a particular way.
A review of transdermal magnesium research explains why claims about meaningful magnesium delivery through skin need caution.