Research profile: Echo Revive

By Hydrogen Studies Editorial Team · Updated November 12, 2026 · Reviewed by Sarah Taylor-Laine, M.Sc., Research Director, Echo Water

Disclosure: Echo Water makes this product and funds Hydrogen Studies. The studies below were run by other researchers; we list them by a fixed rule so the count can be checked.

Of 13 human studies of hydrogen baths, 7 report the hydrogen concentration of the bath water, and 4 of those used 2.22 ppm or less, a level the Echo Revive reached in the lab test. Of those 4, 4 improved their main outcome. 6 studies did not report a bath-water concentration and are not counted.

None of these studies tested an Echo product. They studied hydrogen baths at concentrations this device reached in the lab test. None of them was funded by Echo. 2 of 4 state their funding.

Bath-water concentration measured by H2 Analytics (Las Vegas), report H2A24020801 (February 8, 2024): tub water reached 1.02 mg/L at 15 minutes, 1.60 at 30, 1.87 at 45 and 2.22 mg/L at 60 minutes in warm tap water (starting at 44 °C); in cold water it reached 2.48 mg/L at 60 minutes.

How this count is made

Human studies in the Hydrogen Studies database in which people bathed in hydrogen-rich water, and the paper reports the hydrogen concentration of the bath water at or below 2.22 mg/L (the concentration H2 Analytics measured in the tub water after running the Echo Revive for 60 minutes in warm water). Animal and cell studies, and drinking, inhaled-gas, saline and topical studies are excluded. Studies that do not report a bath-water concentration are counted separately, never matched. A study's result is the direction of its primary outcome as recorded from the abstract and reviewed by our reviewer.

The matched studies (4)

This is a summary of published research, not medical advice. Hydrogen bathing is not a treatment for any disease. How we review studies · How to compare hydrogen devices

Data version 391389b98a-H2A24020801, generated November 12, 2026.