The trichogram is a technique used to evaluate various areas of hair health and is an important tool in the diagnosis of various hair problems. It consists of taking a sample of hair from the scalp and analyzing it under a microscope.

The trichogram can provide valuable information about hair health, density, diameter, and growth stage of hair follicles. It can also help detect hair structural deficiencies, blockages in the hair follicle, as well as offer information about cellular behavior in the hair bulb. The trichogram is a non-invasive technique and is a vital tool in evaluating hair health.