Don't buy it, it's just a lie to the elderly. Most health care products are a pit. In the name of health care, a bunch of such institutions cheat the old people's pensions, pensions and so on. What hydrogen health care? It's ridiculous. Making hydrogen for inhalation? Later, the whole instrument will explode. Hydrogen is easy to explode when it reaches a certain concentration, which has no scientific basis. Hydrogen is good for health. . . Although the human body contains a certain amount of hydrogen, mainly water and organic components contain hydrogen, but they all exist in a stable state. What is the use of inhaling hydrogen? Think with your feet and you'll know it's a lie It's really awesome to spend more than 10 thousand on a bomb that may explode at any time