Mace is the trade name of a spray device that contains a form of tear gas called chloroacetophenone and a volatile solvent. Popular among various law enforcement agencies as well as individual consumers, the device can be used for both crowd control and self-defense. The effects of mace include intense tearing and involuntary shutting of the eyes, as well as a burning feeling along the skin, coughing, inflammation, headache, and dizziness. If sprayed directly into the face from close range, permanent injury can occur. Also, those that utilize the chemical spray must be careful that the wind will not blow the substance back towards them, resulting in accidental self-incapacitation.