The diameter of human hair, a measure of the width of a single strand, typically falls within a range of 20 to 180 micrometers (m). This minute measurement plays a crucial role in various fields, including forensic science, textile manufacturing, and medical diagnosis.
The diameter of human hair offers valuable insights into an individual's traits, enabling forensic experts to identify suspects, and assists in the analysis of hair samples found at crime scenes. In the fashion industry, understanding the diameter of hair fibers helps manufacturers determine the thickness and quality of fabrics. Moreover, in the medical field, hair diameter measurements aid in diagnosing conditions like alopecia and assessing the effectiveness of hair restoration treatments.