 As a descriptive term, it has been applied to Merovingians and classical music enthusiasts, as well as hippies and aesthetes.Hair length is most often measured (in centimeters or inches) from the line of the scalp on the forehead up over the highest point of the skull to its termination, and sometimes from the crown, the latter resulting in 10 centimeter lower values in average.In cosmetology, hair lengths are usually categorized according to the part of the body where the bulk of the longest hair terminates