April 2019 in “Journal of Investigative Dermatology” This study found that induced COX-2 expression in adult transgenic mice led to hair follicle miniaturization and enlargement of sebaceous glands, and suggests that targeting the PGD2 pathway might reverse these effects.
6 citations
,
January 2016 in “Annals of Dermatology” This study found that glycosaminoglycan levels were higher in the occipital area of the hair shaft compared to the parietal area, with children showing higher levels than adults.
1 citations
,
January 2017 in “Yonsei Medical Journal” Hair is thinner near the scalp in acute hair shedding conditions.
September 2026 in “Journal of Cosmetic Dermatology” This study developed a geometric framework for estimating safe donor harvesting in hair transplants, showing that individual hair characteristics like caliber and length significantly affect donor capacity.
34 citations
,
January 2014 in “International Journal of Trichology” This study reported that polarized dermoscopy was better for visualizing vascular patterns, scaling, and reticular pigmentation, while nonpolarized mode better documented features like black dots and tapered hair in various hair and scalp conditions.