Hair cross-sectioning in uncombable hair syndrome: An epoxy embedding technique.

Uncombable hair syndrome is a rare disorder of the hair shaft that leads to silvery and unruly hair. The hair shaft anomaly is characterized by a longitudinal groove that is detected by scanning electronic microscopy-considered to be the gold standard for diagnosis. Recently, hair cross-sectioning has been reported as a viable alternative, but currently available methods still have some flaws, especially because of hair samples' processing specificities. Here, we present two cases of uncombable hair syndrome and a new embedding technique using epoxy to perform the diagnosis.