68 citations
,
February 1990 in “Journal of Applied Social Psychology” Bald men are often viewed more negatively and as older than they really are.
22 citations
,
April 2015 in “Current problems in dermatology” Human hair follicles have a unique metabolism that changes between growth stages and may contribute to baldness.
16 citations
,
June 2019 in “International Journal of Women's Dermatology” Type 2 diabetes may increase the risk of severe hair loss in African American women.
7 citations
,
January 2012 California Ground Squirrel hair can indicate environmental health by showing element accumulation.
5 citations
,
September 2020 in “Molecules” Extracts from three Polynesian plants were found to promote hair growth by affecting cell growth and gene expression related to hair.
1 citations
,
February 2025 in “Scientific Reports” The method effectively analyzes skin tissue changes, especially in the arrector pili muscle and nerve fibers with hair follicles.
Understanding hair surface properties is key for effective hair care products.
1 citations
,
January 2014 in “Elsevier eBooks” Melanocytes produce melanin; their defects cause vitiligo and hair graying, with treatments available for vitiligo.
759 citations
,
February 2009 in “Current Biology” Hair follicles are complex, dynamic mini-organs that help us understand cell growth, death, migration, and differentiation, as well as tissue regeneration and tumor biology.
74 citations
,
January 1998 in “Dermatology” Men who think they are losing hair feel worse about themselves, especially if they are younger.
58 citations
,
February 2016 in “Scientific reports” Blocking BACE1 and BACE2 enzymes causes hair color loss in mice.
42 citations
,
July 2015 in “Cosmetics” Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.
18 citations
,
October 2018 in “Nutrients” Annurca apple extract promotes hair growth by changing hair follicle metabolism to boost keratin production.
17 citations
,
June 2014 in “Journal of Ultrasound in Medicine” Abnormal cuticle and hair shaft medulla cause hair loss in androgenetic alopecia; sonography helps diagnose and manage it.
12 citations
,
January 1981 in “Springer eBooks” Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.
5 citations
,
May 2021 in “Veterinary medicine and science” Injecting cosyntropin into grizzly bears increases blood cortisol but doesn't change hair cortisol levels.
September 2025 in “International Journal of Ayurvedic Medicine” Hair medulla patterns vary by Prakruti type, affecting hair strength.
August 2024 in “International Journal of Basic & Clinical Pharmacology” Secretome-based therapies could improve hair growth better than current treatments.
April 2024 in “Journal of wildlife diseases” Muskox hair growth rates vary widely, so a single growth rate can't be used for all populations.
January 2021 in “Research Square (Research Square)” Rabbits with high wool production have more hair follicles, influenced by specific long noncoding RNAs.
September 2020 in “Research Square (Research Square)” Long noncoding RNAs help regulate hair follicle density in rabbits.
1113 citations
,
August 1999 in “The New England Journal of Medicine” Hair follicle biology advancements may lead to better hair growth disorder treatments.
226 citations
,
January 2002 in “Biological and Pharmaceutical Bulletin” A new method quickly extracts and identifies proteins from hair and other keratin sources.
210 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color production in mice is closely linked to the hair growth phase and may also influence hair growth itself.
190 citations
,
October 2002 in “The FASEB journal” Androgens may cause hair loss by increasing TGF-beta1 from scalp cells, which inhibits hair cell growth.
174 citations
,
April 2005 in “The American journal of pathology (Print)” Capsaicin, found in chili peppers, can slow down hair growth by affecting skin cells and hair follicles.
155 citations
,
August 2003 in “Journal Of Experimental Zoology Part B: Molecular And Developmental Evolution” Understanding hair growth involves complex interactions between molecules and could help treat hair disorders.
146 citations
,
May 2002 in “The American journal of pathology” Cathepsin L is essential for normal hair growth and development.
145 citations
,
November 2018 in “Nature Communications” The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.
131 citations
,
July 2009 in “Experimental Dermatology” The document concludes that specific cells are essential for hair growth and more research is needed to understand how to maintain their hair-inducing properties.