[Structural lesions of human hair caused by permanents]. / Lesiones estructurales en cabello humano causadas por permanentes.

A study is carried out on the alterations produced in the cuticle of women's hair treated regularly for a period of more than 12 years with hair - lighteners, hair - dyes and perms. Assays have also been carried out "in vitro" on the effect of the perms on locks of hair. The scanning electron microscope has been used for observation of the samples.