Different treatments change the strength and flexibility of human hair.
October 2025 in “Frontiers in Veterinary Science” Quercetin boosts hair follicle stem cell growth and survival in cashmere goats.
July 2026 in “Journal of Investigative Dermatology”
13 citations
,
May 2016 in “International journal of biological macromolecules” Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.
36 citations
,
July 1996 in “The journal of investigative dermatology/Journal of investigative dermatology” Mice with the 'lanceolate hair' mutation have abnormal hair and skin similar to human Netherton's syndrome.
9 citations
,
February 2016 in “Anatomical Science International” Hair proteins change location and structure as hair cells mature.
19 citations
,
May 2008 in “Applied spectroscopy” Human hair has different protein structures in its cuticle and cortex.
1 citations
,
June 1998 in “Journal of Forestry Research” Mammalian hair scales change from smooth to wavy due to friction.
Researchers found genes in sheep that may affect hair growth and wool quality.
January 2010 in “EPub Bayreuth (University of Bayreuth)” Polyquaternium-87 reduces hair friction the most among tested polymers.
5 citations
,
April 2024 in “Animals” Younger cashmere goats produce more and better-quality fiber due to higher active hair follicles and antioxidant capacity.
2 citations
,
March 2014 in “Veterinary World” Indian bison, black buck, and nilgai have distinct hair follicle patterns useful for species identification.
46 citations
,
June 2013 in “Journal of structural biology” High glycine–tyrosine keratin-associated proteins help make hair strong and maintain its shape.
July 2026 in “Journal of the European Academy of Dermatology and Venereology”
6 citations
,
January 2016 in “International Journal of Trichology” Taking 1 mg of finasteride daily could potentially treat rare hair conditions like Acquired Progressive Kinking of the Hair and whisker hair.
January 2007 in “Pizhūhish va sāzandigī” Hairless guinea pigs are useful for research in allergies, skin tests, and diseases.
May 2020 in “Research Square (Research Square)” Researchers found four key stages of cell development that are important for hair growth and shedding in cashmere goats.
7 citations
,
December 2010 in “대한의생명과학회지” Hair growth after depilation increases skin thickness, mast cell counts, and cell activity.
3 citations
,
October 1994 in “Medical Molecular Morphology” The lower part of rat vibrissa hair gets more blood and is well-protected for growth.
4 citations
,
April 2019 in “Cosmetics” Hair stiffness is higher when it has more para-like cortical cells.
3 citations
,
January 1998 in “ACTA HISTOCHEMICA ET CYTOCHEMICA” Hair keratins are mainly on macrofibrils in the cortex and in the endocuticle in the cuticle.
1 citations
,
December 2024 in “Scientific Data” Researchers identified key molecular changes in goat hair follicles that could improve cashmere production.
1 citations
,
January 2009 in “Journal of S C C J” Changing disulfide bonds in human hair affects its melting behavior and thermal stability.
1 citations
,
June 2022 in “Gene reports” The analysis found genes linked to skin and hair development are more active in Pashmina goats, which may explain their long-fiber production.
3 citations
,
June 1979 in “The Journal of Dermatology” Glycosaminoglycan levels peak early in hair growth and decrease as the cycle progresses.
72 citations
,
September 1975 in “Biology of Reproduction” Most zinc in rat sperm is in the tail, linked to structures similar to hair keratin.
27 citations
,
September 1988 in “PubMed” Hair follicle shape determines hair type: curly, straight, or in-between.
2 citations
,
January 2000 in “Journal of Toxicologic Pathology” A single recessive gene causes sparse hair in certain Japanese White rabbits.
22 citations
,
December 2013 in “Molecular biology of the cell” ILK is essential for proper hair follicle development and structure.
The research identified key molecules that help hair matrix and dermal papilla cells communicate and influence hair growth in cashmere goats.