1 citations
,
July 1935 in “Nature” Animal hair can curl tightly on its own, especially in foxes, due to changes in keratin.
15 citations
,
October 2004 in “Colloids and surfaces. B, Biointerfaces” Holes in mature hair are likely caused by the removal of substances during hair care.
2 citations
,
March 1977 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Defective mink guard hairs have split tips and missing cuticle cells, causing a metallic sheen.
7 citations
,
November 2013 in “Pediatric and Developmental Pathology” Over half of the children had abnormal hair under a microscope, with many having genetic hair conditions.
42 citations
,
September 2000 in “British Journal of Dermatology” Some children are born with unusually short, fine hair because their hair growth phase is short, but this often gets better by itself during puberty.
27 citations
,
August 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Researchers found new genes involved in hair growth, which could help develop new hair treatments.
October 2001 in “Science news” Understanding hair growth and loss is complex, involving genetic and molecular factors.
April 2017 in “Journal of Investigative Dermatology” The hair follicle dermal sheath is essential for hair shedding and needs to communicate with the outer root sheath for normal hair growth cycles.
130 citations
,
January 1994 in “Differentiation” Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.
37 citations
,
January 2017 in “International Journal of Dermatology” Trichoscopy helps tell apart alopecia areata and trichotillomania in Asians by looking at specific hair and scalp features.
28 citations
,
October 1985 in “The Journal of Cell Biology” Researchers isolated and identified structural components of human hair follicles, providing a model for studying hair formation.
4 citations
,
August 2023 in “Journal of Investigative Dermatology” Certain genes influence the direction of hair whorls on the scalp.
October 2024 in “Skin Research and Technology” Pili annulati causes zebra-striped hair but doesn't affect hair strength or quality of life.
March 2026 in “International Journal of Advanced Biochemistry Research” German shepherd hair varies in color and pattern but is flat with a consistent internal structure.
19 citations
,
January 2009 in “International review of cell and molecular biology” Hair's strength and flexibility come from its protein structure and molecular interactions.
1 citations
,
January 1971 in “Acta dermato-venereologica” Mice hair follicles take in the amino acid cystine.
September 2017 in “Journal of Investigative Dermatology” The research concluded that hyaluronic acid affects the formation and growth of hair follicle-like structures in a lab setting.
2 citations
,
September 2023 in “Journal of the Egyptian Womenʼs Dermatologic Society” Exclamation mark hairs and broken hairs best indicate active alopecia areata.
127 citations
,
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.
Hair feels different when touched and rubs together in various ways.
1 citations
,
January 1989 Four antibodies were developed to help study hair follicle cell differentiation.
32 citations
,
February 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Two specific hair keratin genes are active during hair growth and decline as hair transitions to rest.
2 citations
,
January 2010 Tianzhu white yak hair varies in structure and density between fuzz and coarse hair.
January 2026 in “Indian Journal of Dermatopathology and Diagnostic Dermatology” Corkscrew hairs can help diagnose trichotillomania.
3 citations
,
February 2009 in “Journal of The European Academy of Dermatology and Venereology” Sparse hairs below frontal hairline can indicate early male balding.
30 citations
,
July 2000 in “PubMed” Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.
April 2016 in “Actas Dermo-Sifiliográficas” The document concludes that a unique target-like hair regrowth pattern in alopecia areata may be more common than thought and should be properly identified.
88 citations
,
March 2004 in “Journal of Investigative Dermatology”
21 citations
,
April 1982 in “Genetics Research” Mice with the naked gene have missing or abnormal hair cells.
47 citations
,
April 2000 in “Experimental Dermatology” A new gene mutation causes a rare type of hair loss.