12 citations
,
June 2006 in “Anais Brasileiros de Dermatologia” The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.
Hair movement can indicate hair quality and health.
January 2023 in “Skin appendage disorders” Two Hispanic women developed Plica neuropathica, a condition causing tangled hair, possibly due to hair damage and various risk factors.
September 2023 in “Pakistan Journal of Medical & Health Sciences” Understanding crown whorl patterns can improve hair transplant results for men.
Pseudofolliculitis causes painful bumps and dark spots from shaving, especially in people with curly hair, and can be treated by changing shaving habits and using specific topical treatments.
The "sinuskissen" in cat hair follicles is mostly connective tissue, affecting fluid flow.
18 citations
,
March 2009 in “Experimental Dermatology” Pilomatricoma can develop into various hair-related structures.
22 citations
,
September 2000 in “Journal of Investigative Dermatology” μ-Crystallin may help hair growth by affecting thyroid hormone levels in mouse hair follicles.
56 citations
,
September 2010 in “Veterinary pathology” Certain mouse strains develop a skin condition similar to a human hair loss disease due to genetic defects.
77 citations
,
April 1968 in “Development” Excess vitamin A can cause hair follicles to change into gland-like structures.
3 citations
,
January 2019 in “Skin Research and Technology” Frequent use of hair straighteners can cause hair loss similar to scarring alopecia in young Turkish women.
10 citations
,
January 2012 in “International Journal of Cosmetic Science” Thioglycolic acid mainly affects the unordered areas in hair structure.
October 2025 in “EMJ Dermatology” Histopathology is crucial for accurately diagnosing eruptive vellus hair cysts.
39 citations
,
April 2020 in “Clinical, Cosmetic and Investigational Dermatology” Asian hair is generally straight and thick, with unique disorders and properties, and more research is needed to understand it fully.
May 2023 in “Archives of dermatological research” Some factors like thyroid disease, diabetes treatment, hair dryers, natural hairstyles, and scalp conditions can affect the treatment results for a hair loss condition called CCCA.
87 citations
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February 2000 in “Journal of Investigative Dermatology” Stem cells in developing hair follicles move to specific areas as they mature.
37 citations
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August 2016 in “Clinical, Cosmetic and Investigational Dermatology” The document concludes that better treatments for CCCA are needed and more research is required to understand its causes related to hairstyling and genetics.
January 2002 in “Proceedings of The Japanese Society of Animal Models for Human Diseases” Keratin2-6g is crucial for hair follicle development, with mutations causing cell degeneration and vacuolation.
28 citations
,
November 1987 in “Journal of the American Academy of Dermatology” The model successfully grew and differentiated hair follicle cells in the lab.
12 citations
,
January 1934 in “Proceedings of the Royal Society of London Series B Containing Papers of a Biological Character” Stretched hair has a similar structure to natural silk, showing hair's elasticity involves reversible changes within its molecules.
122 citations
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April 1995 in “Journal of Cutaneous Pathology” The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.
17 citations
,
July 1977 in “International Journal of Dermatology” Proper shaving techniques and specific topical treatments can help manage pseudofolliculitis barbae.
21 citations
,
December 2011 in “Chungara” Mummy hair's chemical composition may not accurately show ancient people's health due to environmental contamination.
22 citations
,
January 1985 Water makes hair more flexible, especially the outer layer.
7 citations
,
January 2017 in “Sub-cellular biochemistry/Subcellular biochemistry”
10 citations
,
November 1997 in “British Journal of Dermatology” A 10-year-old boy had the earliest reported case of hair that became progressively kinkier but eventually returned to normal on its own.
15 citations
,
February 1999 in “The anatomical record” Some mutant mice have hair with abnormal cross-linking, mainly in the cuticle, not affecting other hair parts.
119 citations
,
November 1969 in “Journal of Ultrastructure Research” Macrophages help break down collagen around hair follicles during hair growth.
11 citations
,
January 2022 in “Experimental Dermatology” Severe CCCA may be biologically and clinically different from milder forms.
127 citations
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December 2007 in “Journal of Investigative Dermatology” Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.