September 2017 in “Journal of Investigative Dermatology Symposium Proceedings” Prostaglandin D2 increases testosterone production in skin cells through a process involving reactive oxygen species, which could be a new target for treating hair loss and other skin conditions driven by testosterone.
9 citations
,
June 2019 in “Mycopathologia” Malassezia yeast linked to hair loss; ketoconazole helps treat it.
7 citations
,
January 2012 California Ground Squirrel hair can indicate environmental health by showing element accumulation.
March 2024 in “Journal of functional foods” Collagen peptides from marine and bovine sources may help prevent hair loss by affecting hair follicle stem cells differently.
56 citations
,
July 2005 in “Experimental Dermatology” Injected human hair follicle cells can create new, small hair follicles in skin cultures.
44 citations
,
October 1990 in “Archives of Dermatological Research” The connective tissue around hair follicles changes structure throughout the hair cycle.
22 citations
,
March 2017 in “Scientific reports” Double-stranded RNA causes inflammation in hair follicle cells, which may help understand and treat alopecia areata.
18 citations
,
January 2020 in “Ecology and evolution” Genes related to pigmentation, body rhythms, and behavior change during hares' seasonal coat color transition, with a common genetic mechanism in two hare species.
8 citations
,
August 2022 in “BMC Veterinary Research” C57BL/6 mice and SD rats have different sweat gland and hair follicle patterns, useful for skin research.
6 citations
,
April 2012 in “Journal of Oral Pathology and Medicine” Rushton's hyaline bodies form from hair keratin and blood substances.
6 citations
,
December 1990 in “PubMed” Keratinocytes in hair follicles differentiate similarly to skin cells, with specific patterns in different regions.
4 citations
,
July 2025 in “Frontiers in Pharmacology” Cooling with antioxidants helps protect hair during chemotherapy.
1 citations
,
January 2021 in “Pakistan journal of zoology” Red fox, golden jackal, and gray wolf hairs have similar features but differ in length, thickness, and inner structure.
July 2025 in “Biochimica et Biophysica Acta (BBA) - Molecular Cell Research” MicroRNA-22-3p hinders hair regrowth in male pattern baldness by affecting a specific protein.
January 2023 in “Journal of Cutaneous Pathology” The study found certain scalp biopsy features can help tell apart alopecia areata from pattern hair loss even when typical immune cells are not seen.
September 2013 in “Hair transplant forum international” Dr. Robert S. Haber concluded that hair transplant surgeons must master scalp biopsy techniques to quickly diagnose and treat hair loss conditions.
March 2012 in “Journal of The American Academy of Dermatology” Higher levels of certain nerve-related proteins are linked to hair loss in women with scalp pain.
July 2004 in “Dermatologic Surgery” A woman had temporary hair loss due to a stress-related condition after a facelift.
Hair germ cells differ from epidermal cells in keratin expression, and specific keratins form after hair differentiation.
July 2024 in “Journal of Bioscience and Bioengineering” Different conditions affect how easily hair bacteria can be isolated.
109 citations
,
October 2007 in “Journal of pineal research” Melatonin helps regulate hair growth and protects the hair follicle from stress.
2 citations
,
January 2013 Hair can help solve crimes by revealing personal and chemical information.
December 2019 in “C&EN Global Enterprise” Thicker hair isn't always stronger.
276 citations
,
January 2005 in “International review of cytology” More research is needed to understand how hair keratins work and their role in hair disorders.
66 citations
,
February 1985 in “Archives of dermatological research” Hair dyes penetrate the scalp very minimally, less than 1%.
27 citations
,
November 2012 in “Journal of Biomedical Optics” Confocal Raman microscopy can effectively study drug delivery in hair follicles using pig ear models.
11 citations
,
November 2023 in “Journal of Advanced Research” Activating ALDH2 can boost hair growth.
2 citations
,
January 2004 in “Sen i Gakkaishi” Human hair and nail proteins are unlikely to cause allergic reactions.
1 citations
,
September 2003 in “CRC Press eBooks” Hair is important for social and sexual communication in humans.
December 2025 in “Biology Bulletin Reviews” Hair cortisol can indicate animal stress but varies with many factors.