The healing might take a little bit longer, but everything is possible, and it would be enough to build a strong trust in the Kyonglak medicine, which is the main reason of the exercise. Even if I have a good Juipje with me, the expectations on Juipje itself does not make a treatment. You need strong belief in the Kyonglak functions before curing the uncurable diseases, so it is much like climbing a dangerous mountain. Yunje includes walnut oil, sunflower oil, corn oil, and bean oil, or in other words, edible oil in general. The functions and results are almost the same, so you had better use the oil that is most easily found in one's own country.
Brazil is abundant in bean oil, and in the United States sunflower oil is easy to find.
The reason we use these specific oil is because the oil fits into the climate of the area. So in Brazil, bean oil is the most effective, whereas in the United States, sunflower oil is more effective. That is because you cannot confer immunity in a short time. To raise immunity, you need immune body first. When using Yunje only, the immune body cannot be made quickly.