Chinese medicine can indeed be put for a long time, but that is in the case of drinking tablets (generally five years, expensive drugs will be longer), you said Poria powder is perhaps not entirely Poria ingredients, right? Are there other ingredients added?
My suggestion is to simply use it as a mask, mix it with honey and warm water. Poria honey mask
Materials: Poria powder 15 grams of white honey 30 grams
Practice: honey and Poria powder into a paste that is made. Apply it to your face at night before going to bed, and wash it off with water the next morning.
Effectiveness: This mask has nutritional skin, eliminate age spots chloasma effect. Ancient medical practitioners believe that Poria can dissolve all the black spots scar, and honey with the use of both nutritional skin and can lighten pigmentation spots
But downstairs, the idea of foot washing should also be good ah, just the general use of the dregs of the active ingredients boiled out of the soaked feet is right, directly with the powder effective use? Oh, this I am not sure, you look at it yourself.