90 citations
,
July 2014 in “Conservation Physiology” Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.
October 2007 in “Springer eBooks” 
March 2023 in “International journal of pharmaceutical sciences review and research” The F2 Emulgel with Tridax procumbens extract showed good physical properties and antimicrobial effectiveness for wound healing.
January 2009 in “Heilongjiang xumu shouyi” Stem cells are present in goat hair follicles but decrease over time.
September 2018 in “Cumhuriyet medical journal” Women with more body hair tend to have thicker belly fat and more metabolic health issues.
24 citations
,
January 1969 in “Archives of Dermatological Research” Hair malformations may occur due to timing issues in hair development.
15 citations
,
February 2015 in “Han-gug chugsan sigpum hag-hoeji/Korean journal for food science of animal resources” Egg shell membrane hydrolysates can reduce wrinkles and improve skin health.
13 citations
,
February 2024 in “World Journal of Stem Cells” New markers help understand and use hair follicle stem cells for regeneration.
May 2025 in “International Journal of Molecular Sciences” DHHB from Platycladus orientalis L. promotes hair growth and could be a natural alternative to current treatments.
May 2018 in “DergiPark (Istanbul University)” Hormone levels studied are not linked to PCOS.