7 citations
,
October 2017 in “The Prostate” Baldness in men with prostate cancer is linked to higher levels of certain sex hormones, but chest hair density is not.
2 citations
,
February 2020 in “Journal of Plastic Surgery and Hand Surgery” Good-looking donor sites for hair transplants usually have higher hair density and thicker hair.
September 2023 in “Bioscience, biotechnology, and biochemistry” Bacterial communities on scalp hair are unique to each person but consistent across different scalp sites.
September 2022 in “International Journal of Trichology” Trichoscopic measurements help determine the severity of female pattern hair loss.
73 citations
,
November 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Some women with common hair loss may develop permanent hair loss.
12 citations
,
November 2022 in “Toxics” EtG in hair can help detect alcohol use but may be inaccurate in people with certain health conditions.
10 citations
,
April 1999 in “British journal of dermatology/British journal of dermatology, Supplement” Skin irritants can promote hair growth by affecting specific skin proteins.
8 citations
,
May 2022 in “Journal of medicine and life” COVID-19 patients may experience hair loss, but it's not linked to their age or sex.
5 citations
,
March 1992 in “PubMed” Arsenic levels in rat hair reflect arsenic intake and accumulation in the body.
3 citations
,
March 2010 in “International Journal of Cosmetic Science” Functionalized silicones improve hair appearance, combing, and manageability.
Hair can naturally regain color after greying, and this change may be linked to stress levels.
1 citations
,
January 2013 in “China Animal Husbandry & Veterinary Medicine” VEGF increases in goat hair follicles during fetal development, boosting skin blood vessel density.
February 2026 in “Journal of the Korean Society of Cosmetology” Seniors continue using hair-care services mainly due to satisfaction, hair-loss management, and improved self-esteem.
Hair can naturally regain color, and stress might influence greying and its reversal.
January 2003 in “Zhonghua shaoshang zazhi” Murine fetal epidermal stem cells can help regenerate hair follicles.
March 1998 in “Journal of dermatological science” Diphencyprone initially increases mouse hair growth, then slows it, possibly due to changes in specific protein levels.
May 2025 in “Journal of Investigative Medicine” FAI is a better marker for predicting female hair loss than testosterone or SHBG alone.
January 2023 in “International journal of dermatology, venereology and leprosy sciences” Low levels of vitamin D and ferritin may increase the risk of female pattern hair loss.
3 citations
,
June 2021 in “Journal of affective disorders” Hair cortisol and cortisone levels may affect how work stress influences depression in Chinese fishermen.
January 2013 in “IRIS UNIMORE (University of Modena and Reggio Emilia)” Hydrophobized silica nanoparticles penetrate the skin's outer layer more effectively, while hair follicle density doesn't impact their accumulation.
November 2023 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Pig hair cortisol levels are inheritable and linked to stress responses, which could help select for more resilient pigs.
4 citations
,
July 2024 in “BMC Zoology” Dromedary camel hair structure and mineral content change with age.
356 citations
,
December 1986 in “The journal of cell biology/The Journal of cell biology” Hair and nail cells share similar proteins, indicating a common differentiation pathway.
19 citations
,
December 2016 in “PLOS ONE” Early-stage skin cells help regenerate hair follicles, with proteins SDF1, MMP3, biglycan, and LTBP1 playing key roles.
2 citations
,
December 2016 in “Journal of Pakistan Association of Dermatology” Higher androgen levels are linked to more severe hair growth in hirsute women.
1 citations
,
January 1985 in “IRIS UNIMORE (University of Modena and Reggio Emilia)” 34 citations
,
October 1975 in “Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis”
February 2026 in “Molecules” A new method can quickly and accurately measure tobacco exposure and stress using a small hair sample.
10 citations
,
September 2020 in “Archives of Dermatological Research” Both methods improve hair density and thickness; double-spin may be more effective.