Multiple Chemical Sensitivity and Induced Skin Sensitivity

Multiple chemical sensitivity (MCS), also named as idiopathic environment intolerance (IEI), is a syndrome that comes with the aggravation of environment pollution. It is an adverse health effect or a group of symptoms due to hypersensitivity to chemicals at low concentrations from daily environment. Sensitive skin is a complicated skin state of intolerance to cosmetics or environmental factors without obvious skin lesions, which is possibly a clinical manifestation of MCS or IEI. The progress on identification, classification, and detection methods of sensitive skin will help scientists to further explore MCS.