159 citations
,
July 2006 in “Endocrine Reviews” Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.
93 citations
,
February 2008 in “Atmospheric environment” Ozone reacts more with unwashed hair, producing compounds due to scalp oils, which could lower ozone exposure but increase exposure to reaction products.
38 citations
,
June 2003 in “Journal of Investigative Dermatology Symposium Proceedings” Accurate clinical, histological, and genetic methods are key for understanding and treating hair disorders.
34 citations
,
May 2013 in “Journal of the European Academy of Dermatology and Venereology” Hair growth slows and shedding increases after childbirth, but most women don't experience excessive hair loss.
19 citations
,
May 2016 in “Clinical, cosmetic and investigational dermatology” FGF-2&D/P nanoparticles can help treat hair loss.
18 citations
,
August 2019 in “Journal of Cosmetic Dermatology” PRP therapy may increase hair density in pattern hair loss without serious side effects, but more research is needed.
16 citations
,
November 2013 in “European Journal of Dermatology” Hair gets thinner and grayer with age, and density decreases more in men on top and in women on top and back.
13 citations
,
July 2016 in “BMC Complementary and Alternative Medicine” Hominis Placenta helps hair grow back by increasing cell growth and a specific growth factor.
13 citations
,
January 2016 in “Journal of the Egyptian Women's Dermatologic Society (Print)” Minoxidil works faster and is more cost-effective for treating hair loss, but platelet-rich plasma microneedling can be an alternative for those who can't use minoxidil.
4 citations
,
April 2019 in “Cosmetics” Hair stiffness is higher when it has more para-like cortical cells.
3 citations
,
June 2006 in “Expert Review of Dermatology” The document concludes that hair loss is complex, affects many people, has limited treatments, and requires more research on its causes and psychological impact.
January 2026 in “Biomedical and Biopharmaceutical Research” Pequi and buriti oils improve curly hair's gloss and strength.
January 2019 in “Springer eBooks” PRP may help with hair loss and improve hair quality with few side effects, but more research is needed.
January 2014 in “Journal of Pigmentary Disorders” Women's hair gets thinner and grayer as they age, with treatments available for hair loss and graying.
September 2010 in “Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii” TrichoScan is reliable for counting and measuring hair density but may not accurately assess hair types in women with hair loss.
153 citations
,
August 2002 in “Dermatologic Surgery” Follicular Unit Extraction (FUE) is a less invasive hair transplant method with minimal scarring, suitable for about 60% of patients, especially those needing fewer grafts and quicker recovery.
36 citations
,
December 2016 in “Journal of The American Academy of Dermatology” The normal range for the hair pull test is 2 hairs or fewer, and washing or brushing hair before the test does not affect the results.
22 citations
,
February 2008 in “Journal of Dermatological Science” EPR spectroscopy showed that spontaneous hair growth results in thicker skin and less pigmented hair than depilation-induced growth.
21 citations
,
January 2010 in “International Journal of Trichology” TrichoScan often makes mistakes and needs improvement for correct hair growth analysis.
17 citations
,
June 2011 in “The journal of investigative dermatology/Journal of investigative dermatology” The G60S Connexin43 mutation causes hair growth issues and poor hair quality in mice, similar to human ODDD patients.
13 citations
,
March 2020 in “Genes” Disrupting the FGF5 gene in rabbits leads to longer hair by extending the hair growth phase.
11 citations
,
March 2001 in “Clinics in Dermatology” Hair microscopy is useful for diagnosing hair disorders, but clear definitions are needed for accurate genetic analysis.
8 citations
,
January 2016 in “Annals of Dermatology” A complex of 5-aminolevulinic acid and glycyl-histidyl-lysine peptide may help increase hair count in male pattern hair loss without side effects.
6 citations
,
December 2018 in “International Journal of Cosmetic Science” Mexican women's hair is between Asian and Caucasian hair in thickness and shape, with varied strength and some damage.
5 citations
,
January 2013 in “Cells Tissues Organs” Activin B helps start and grow hair follicles in mice.
1 citations
,
May 2024 in “PLoS ONE” Horse hair follicles can be stored at cool or room temperature for a week without losing RNA quality.
December 2023 in “International Journal of Medical Arts” Transplanted hair follicles show significant changes after FUE, needing more research.
Human hair keratins can self-assemble and support cell growth, useful for biomedical applications.
January 2019 in “Journal of Entomology and Zoology Studies” Ruminant goats have larger and more defined hair follicles than younger goats.
November 2025 in “Archives of Dermatological Research” Limelight (CB-EVs) safely promotes hair growth.