10 citations
,
July 2017 in “Archives of Plastic Surgery” Hair thickness decreases from the upper to lower areas of the back of the head, affecting hair transplant results.
5 citations
,
June 2016 in “Twin research and human genetics” Hair diameter and curvature are mostly determined by genetics.
41 citations
,
May 2001 in “PubMed” Different thicknesses of hair strands can indicate the severity of hair thinning.
5 citations
,
October 2011 in “Small ruminant research” Goat hair growth and follicle activity change with the seasons and differ between males and females.
8 citations
,
October 2011 in “Anthropologischer Anzeiger” Pubic hair is thicker than axillary and scalp hair, useful for forensic identification.
30 citations
,
March 2019 in “Archives animal breeding/Archiv für Tierzucht” The KRTAP15-1 gene affects cashmere fiber thickness in goats.
April 2024 in “Clinical dermatology review (Print)” Trichoscopy is an effective, noninvasive method for early diagnosis of Female Pattern Hair Loss.
16 citations
,
January 2015 in “Annals of Dermatology” The study found specific hair and scalp patterns for different types of hair loss in Koreans, noting racial differences affect diagnosis.
4 citations
,
October 2012 in “Archives of Dermatology” Hair diameter diversity is a key sign for diagnosing and managing male pattern baldness.
4 citations
,
July 2022 in “Scientific reports” Crossbreeding improves goat fiber quality, and specific genes affect hair traits and color.
95 citations
,
January 2007 in “Human biology” Human hair can be classified into eight types based on physical features, not ethnicity.
1 citations
,
May 2019 in “Journal of The European Academy of Dermatology and Venereology” New method, hair distribution width (HDW), improves accuracy in diagnosing androgenetic alopecia (AGA).
57 citations
,
November 1987 in “Pediatric Dermatology” Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.
February 2026 in “Small Ruminant Research” The IRF2BP2 gene affects sheep fleece quality by influencing fiber traits.
September 2014 in “Chinese Journal of Dermatology” Hair diameter difference, brown skin discoloration around hair follicles, and missing hair in certain areas are key signs of androgenetic alopecia (commonly known as hair loss) when viewed under a dermoscope.
January 2020 in “International journal of scientific research” Dermoscopy shows that varying hair shaft thickness and single hair follicles are main signs of male pattern baldness, especially in the fronto-temporal region.
96 citations
,
January 2013 in “International Journal of Trichology” Trichoscopy is a useful, non-invasive way to diagnose different types of hair loss.
April 2023 in “Dohuk medical journal” Trichoscopy effectively differentiates Androgenetic Alopecia from Telogen Effluvium.
January 2021 in “International journal of dermatology, venereology and leprosy sciences” AGA and TE can be differentiated by specific trichoscopic features, with AGA showing more variation in hair thickness in fronto-temporal areas.
March 2026 in “Journal of the American Academy of Dermatology” Hair diameter diversity could improve androgenetic alopecia assessment and treatment planning.
1 citations
,
April 2021 in “Clinical, Cosmetic and Investigational Dermatology” Conflicting findings in androgenic alopecia are likely due to biopsy location, hair diameter diversity, and hair follicle miniaturization.
31 citations
,
February 2020 in “BioMed Research International” Thai people's hair density decreases with age and varies by scalp area, but hair thickness stays the same regardless of age or scalp area.
July 2025 in “Journal of the American Academy of Dermatology” Hair diameter diversity helps assess hair loss, but its standard measure varies by individual and ethnicity.
January 2023 in “Al-Azhar International Medical Journal /Al-Azhar International Medical Journal” Trichoscopy is a quick, non-invasive way to measure hair density and thickness, helping diagnose hair loss.
Afro-textured hair needs specialized care due to its unique genetic and structural properties.
December 2025 in “International Journal of Cosmetic Science” A new tool helps better assess and treat hair loss in Chinese men.
405 citations
,
January 2004 in “Journal of Investigative Dermatology” Hair follicle size and distribution vary significantly across different body sites.
5 citations
,
April 2024 in “Animals” Younger cashmere goats produce more and better-quality fiber due to higher active hair follicles and antioxidant capacity.
October 2025 in “International Journal of Cosmetic Science” Hair properties vary by ethnicity and environment, affecting surface charge and particle deposition.
March 2024 in “International journal of molecular sciences” The research identified key proteins that affect wool fiber thickness in Angora rabbits.