They say your kidney deficiency is very serious. So, what are the specific aspects? What did they say? It is very common for beauty salons to massage with essential oil or care for kidneys. As for whether it is useful or not, I think if they insist that you have kidney deficiency in order to sell it, it is almost the same as not doing it. If you really have kidney deficiency, I think the effect is limited. Of course, I will not completely deny the role of essential oil in pushing back and strengthening kidney.