Yunnan Baiyao is a staple herbal rememdy to help stop bleeding, prevents infection, as well as relieve the pain and expediate healing. It has both anti-bacterial and homeostatic properties. The aerosol is intended for acute sprains and injuries or muscles soreness associated with hardwork or athetes. Each box contains two bottles the smaller, red bottle is designed for initial use on the wound. After 15 minutes, reapply. Following the initial applications of the small can, switch to the larger can every 6 hours for continued healing. This product is not induct for use on open wounds or sores.