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.
Hair dysplasias involve various hair disorders causing fragility, breakage, and poor hair adhesion.
2 citations
,
September 2017 in “Plastic and Aesthetic Research” Healthy Han Chinese have lower hair density than whites and Africans, and transplanting 300 hair units can nearly restore normal hair density.
January 2007 in “Revista del Centro Dermatológico Pascua” Androgenetic alopecia causes hair thinning in women, affecting their quality of life.
2 citations
,
August 2019 in “Electronics and Communications in Japan” The device mimics human hair follicles and detects tiny forces and moments with high sensitivity.
January 2006 in “DOAJ (DOAJ: Directory of Open Access Journals)” Loose anagen hair syndrome causes easily pulled, thin hair in kids but is harmless and temporary.
January 2003 in “Research Portal (King's College London)” Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.
8 citations
,
September 1993 in “British journal of dermatology/British journal of dermatology, Supplement” A new method helps isolate key hair components to study hair growth and loss.
11 citations
,
July 2004 in “International Journal of Cosmetic Science” The conclusion is that a new method to measure hair shine was confirmed to match people's visual assessments.
October 2025 in “Experimental & Molecular Medicine” Hair analysis is valuable for health and forensics but faces challenges like growth variability and contamination.
21 citations
,
October 2006 in “International Journal of Dermatology” Asian hair is stronger and more damage-resistant than Caucasian hair due to a thicker cuticle layer.
February 2026 in “Journal of Cosmetic Dermatology” A new reliable scale improves accuracy in measuring hair density and treatment response.
6 citations
,
March 2016 in “PLoS ONE” The patient's hair was thinner and had fewer lipids due to a genetic mutation.
7 citations
,
August 2006 in “Biopolymers” Researchers extracted tiny keratin filaments from human hair by unzipping its outer layer.
January 1997 in “Han-guk hyeonmigyeong hakoeji/Applied microscopy” The hair follicle's connection to connective tissue is weaker than the skin's.
264 citations
,
October 1958 in “Archives of Dermatology” A 4-year-old girl has a rare hair condition causing fragile, short hair.
Hair thickening procedures can help people with early hair loss when combined with proper scalp and hair care.
39 citations
,
August 2018 in “Scientific reports” Claudin-1 is important for the barrier function and growth of hair.
April 2019 in “Progress in Crystal Growth and Characterization of Materials” Hair grows like a crystal at a solid-liquid interface without cell division.
1 citations
,
June 2023 in “Journal of applied crystallography” The technique showed that human hair has two main parts, with 68% being rigid and the rest flexible, and water swelling affects its structure.
3 citations
,
October 2015 in “International Journal of Dermatology” Normal hair density and diameter ratios were established to help diagnose adult hair loss.
26 citations
,
January 1964 in “Experimental Cell Research” Different methods like wigs, extensions, and devices can help improve hair volume for thinning hair.
68 citations
,
August 2014 in “PeerJ” Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.
129 citations
,
June 1999 in “Archives of Dermatology” African Americans have less hair density than whites.
30 citations
,
December 2017 in “Clinical, Cosmetic and Investigational Dermatology” Parietal scalp area has lower hair density and smaller hair diameter in women with hair loss.
2 citations
,
January 2022 in “Clinical, Cosmetic and Investigational Dermatology” The refined wash test is a reliable way to measure daily hair loss and can tell the difference between different types of hair loss.
47 citations
,
January 2013 in “International Journal of Cosmetic Science” Hair diversity is influenced by complex genetics and environmental factors, requiring more research for practical solutions.
January 1999 in “Hair transplant forum international” The expected density of a hair transplant depends on the number of hair follicles transplanted and the thickness of the hair.
4 citations
,
November 2011 in “Archives of Dermatology” The photographic method for measuring facial hair density is reliable and valid but needs further testing on different hair densities and skin colors.