Menthocamphorate(cooling oil), include camphor, Mentha arvensis oil, Chinese cinnamon
Eugenia caryophyllata
A kind of mysterious Chinese medicine.
Make skin feel seruken, heat dissipation, refreshant, relieving itching, acesodyne
It help you well when you bited by mosquito, insect. And if you always under the hot sun is liable to sunstroke, you should bring it with you. Which will make you feel cool, make everything fresh.
Also need it when you catch a cold or have a fever.
In a word, it's indeed an omnipotence thing for daily life.