Hair analysis, also called hair analysis, is the term for a chemical analysis of a hair sample. The hair serves as an easily accessible biomonitor, in which many foreign compounds are stored in significantly higher concentrations than in other organs. The term hair analysis itself does not provide any information about the analytical method ultimately used.
Hair analysis is particularly useful in forensic toxicology and ecotoxicology for performing a retrospective analysis of the uptake of various chemical elements and organic compounds of a human over a period of several months. In addition, the hair analysis, sometimes under designations such as "hair mineral analysis" or "bioresonance hair analysis" or "radionic hair analysis", alternative medicine used for various diagnostic applications. These forms of use of hair analysis are widely rejected by scientifically justified medicine.