BIO-DIAT-BERLIN China Oel Chinese Oil 10 ml solution How to use it? You can use it by massage. Mint Oil (Menthae Piperiate Aetheroleum). This product has muscle relaxant properties. When it comes to how to use, a glass of water can be dripped by dripping a few drops. It can also be used by melting in the mouth by placing it on cube sugar. In painful cases, it can be applied externally by massaging. In the upper respiratory tract disorders, it can be taken by breathing with the help of inhaler or dripped into hot water. The product includes China Oel Chinese oil and natural mint oil (menthae piperish eetheroleum).