248 citations
,
April 1988 in “Differentiation” Human and bovine hair follicles have distinct cytokeratins specific to hair-forming cells.
11 citations
,
June 2001 in “British Journal of Dermatology” c-Myc, Max, and Bin1 help hair follicle cells mature and die.
2 citations
,
November 2017 in “Histochemistry and Cell Biology” Polyamines are abundant in certain parts of rat hair follicles and may play a key role in hair growth.
8 citations
,
November 2019 in “International Journal of Morphology” Henna dye improves hair cuticle and thickness but effects vary by hair type and health.
18 citations
,
November 2010 in “Journal of morphology” Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.
14 citations
,
October 2019 in “Journal of Cellular Physiology” Micrografts promote hair growth in androgenetic alopecia treatment.
3 citations
,
March 2019 in “Tekstil Ve Konfeksiyon” Anatolian native goat down-hair is similar to cashmere and can be used for high-quality textiles.
November 2024 in “Journal of Microscopy” Human hair varies in structure based on curl type, with high curl hair showing the most differences.
January 1991 in “Journal of Society of Cosmetic Chemists of Japan” Hair treatments can damage hair by changing its chemical content.
9 citations
,
April 2019 in “Journal of structural biology” Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.
20 citations
,
January 2015 in “Journal of cosmetic dermatology” Older people's hair cuticles get more easily damaged and lose protective oils, especially in their 40s and 50s.
August 2018 in “Journal of The American Academy of Dermatology” Aging significantly affects the hair and scalp of nonbalding Caucasian women, with changes that differ from male pattern baldness.
March 1997 in “Medical Molecular Morphology” Zinc deficiency causes early scalp hair damage that recovers slower than skin symptoms.
83 citations
,
May 2011 in “Experimental Dermatology” Sheep have 17 keratin genes, similar to humans, but with different expression patterns affecting wool and hair.
93 citations
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July 2006 in “Journal of Investigative Dermatology” K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.
28 citations
,
November 2018 in “Journal of structural biology” Different populations have distinct hair structures related to their ancestry.
272 citations
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September 2001 in “Journal of Biological Chemistry” Human hair keratins were cataloged, showing their roles in hair differentiation stages.
98 citations
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December 1991 in “Annals of the New York Academy of Sciences” Keratin gene regulation is similar across mammals, affecting hair follicle differentiation.
70 citations
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February 2007 in “Journal of Investigative Dermatology” K39 and K40 are the last keratins expressed in hair development, completing the hair keratin catalog.
56 citations
,
January 1996 in “Journal of Forensic Sciences” Dye enters hair at the edges of cuticle cells and penetrates more from water than alcohol-based solutions.
40 citations
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March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
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.
17 citations
,
June 2014 in “Journal of Ultrasound in Medicine” Abnormal cuticle and hair shaft medulla cause hair loss in androgenetic alopecia; sonography helps diagnose and manage it.
November 2011 in “Informa Healthcare eBooks” Environmental, chemical, mechanical, and personal health factors can all damage hair and contribute to hair loss or changes in hair quality.
21 citations
,
June 2002 in “International Journal of Cosmetic Science” Advancements in hair keratin research could lead to better hair health treatments.
4 citations
,
January 1976 in “Archives of Dermatological Research” Metabolic disorders can cause hair structure defects and growth issues, but amino acid levels in hair remain normal.
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.
December 2025 in “International Journal of Advanced Biochemistry Research” Malvi cattle hair varies in color and pattern across different body regions.
17 citations
,
February 2022 in “Microscopy Research and Technique” Scanning electron microscopy and elemental analysis can help identify animal species by their hair patterns and elements.
April 2025 in “INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT” Hair histology helps identify animal species in forensic investigations.