567 citations
,
October 2007 in “Clinical and investigative medicine” Hair cortisol can be used to measure long-term stress exposure.
130 citations
,
December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle melanocytes die during hair regression.
109 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.
86 citations
,
August 2000 in “Pigment cell research” Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.
65 citations
,
August 2007 in “Experimental Dermatology” Human hair follicles can make and process prostaglandins, which may affect hair growth.
48 citations
,
March 2003 in “BJOG: An International Journal of Obstetrics and Gynaecology” Mothers and newborns with dental fillings had higher mercury in their hair, but getting fillings during pregnancy didn't raise mercury levels further.
43 citations
,
October 2005 in “Molecular and cellular endocrinology” Hair melanocytes help the skin respond to stress and regulate hair pigmentation.
42 citations
,
January 2011 in “Journal of Biomedical Optics” Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.
40 citations
,
March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
35 citations
,
January 1981 33 citations
,
November 2007 in “JAT. Journal of applied toxicology/Journal of applied toxicology” Human scalp hair on mice can effectively monitor mercury exposure.
30 citations
,
March 2017 in “ACS biomaterials science & engineering” Hair follicles are valuable for regenerative medicine and wound healing.
25 citations
,
May 2019 in “Cosmetics” 18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.
19 citations
,
May 2020 in “Cells” Substance from human umbilical cord blood cells promotes hair growth.
13 citations
,
September 2020 in “Sensors” Hair follicles have a pH gradient, increasing towards the root.
12 citations
,
February 2011 in “Zenodo (CERN European Organization for Nuclear Research)” Hair properties vary with age and ethnic origin.
10 citations
,
September 2020 in “Metabolites” Hair color and length affect metabolite profiles in hair, so they should be considered in hair analysis.
7 citations
,
February 2021 in “Legal Medicine” Hair analysis showed very high metformin levels in two fatal overdose cases, suggesting it's useful in forensics but sweat may affect results.
4 citations
,
December 2021 in “Electronics” The new method predicts post-hair transplant images more accurately than other methods.
4 citations
,
June 2021 in “Frontiers in Pharmacology” Bone marrow stem cells and their medium help hair regrowth.
4 citations
,
January 1981 in “PubMed” Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.
3 citations
,
March 2021 in “Metabolites” Hair loss causes differ between men and women due to changes in hormone levels and inflammation-related pathways.
3 citations
,
March 2009 in “Hirosaki University Repository for Academic Resources (Hirosaki University)” Hirosaki hairless rats have sparse, twisted hair due to missing hair keratin genes.
2 citations
,
April 2023 in “Archives of Aesthetic Plastic Surgery” The phototrichogram is better for measuring hair thickness.
2 citations
,
August 2012 in “Journal of the American Academy of Dermatology” Two patients with the same genetic mutation had both blistering skin and easily pulled out hair.
1 citations
,
January 2011 in “The annals of clinical and analytical medicine” Hair mesotherapy showed improvement in hair growth and thickness without side effects.
1 citations
,
November 2023 in “Cosmetics” Surfactants damage hair, but sealing the cuticle can prevent this.
1 citations
,
July 2023 in “Biomimetics” A new hair treatment using a natural polyphenol complex improves hair strength, reduces static, and protects against UV damage.
1 citations
,
September 2018 in “International journal of research - granthaalayah” Human hair medulla doesn't break down hydrogen peroxide, which may affect hair color formation.
February 2026 in “Chinese Medicine” Natural products might help treat hair greying.