To be mixed with the tonoko powder for making the shakuhachi's interior "ji" Spread the mixture as thinly as possible a number of times, avoiding thick coats.
NOTE: Japanese-made urushi causes stronger allergic reactions than standard urushi. For this reason, it is likely to cause a serious rash & other symptoms, especially in individuals with weakened immune systems. Please refrain from using this urushi unless you know that you are urushi tolerant. If you feel something unusual after the urushi application, you should visit a dermatologist.