March 2026 in “Journal of the American Academy of Dermatology” May 2024 in “Journal of the American Academy of Dermatology”
The authors defended their methods for measuring hair density and caliber, emphasizing the need for consistent photography and manual counting for accuracy in evaluating hair loss treatments.
July 2025 in “Journal of the American Academy of Dermatology” Hair diameter diversity helps assess hair loss, but its standard measure varies by individual and ethnicity.
April 2024 in “Journal of the American Academy of Dermatology”