A kind of herbs are mainly licorice, Fufeng, Scutellaria barbata, wormwood, Artemisia annua and so on. Its main function is to make use of the drug penetration of these Chinese medicines to reduce sweaty feet and get rid of peculiar smell, and it has a certain physical therapy effect. But it smells of Chinese herbal medicine, and some people may not adapt. The price is around 1-6 yuan.
There are two kinds of activated carbon: charcoal and bamboo charcoal. Now the effect of bamboo charcoal is better than charcoal, and the price is also expensive. The main function is to simply absorb foot sweat and its odor. The insole itself has no other drugs or chemical odor and no other side effects, and is suitable for everyone. The price is around 3- 10 yuan.
In addition, there is a single leather shoe pad, about 2-3 mm thick. Its main function is also to absorb foot sweat and its odor, and it has no side effects on human body, so it is comfortable to wear and can be washed for a long time. The better price is above 10 yuan.