Curly hair may be caused by a muscle contraction, and muscle relaxants might help treat it.
3 citations
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July 2003 in “PubMed” The research found a way to measure hair surface changes by analyzing how light reflects off of it, and determined hair cuticle angles vary by hair length and color.
May 2025 in “Experimental Dermatology” A new genetic tool improves the study of hair growth and potential hair disorder treatments.
52 citations
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May 2006 in “Journal of Structural Biology” Keratin-associated proteins help link filaments and affect keratin's strength.
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.
January 1994 in “Nihon Chikusan Gakkaiho” Collagen fibrils in mink skin change structure during hair growth, becoming looser and thicker in the active phase.
10 citations
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January 2010 in “International journal of trichology” Keratin-associated proteins are part of the developing hair fiber cuticle.
April 2018 in “Journal of Investigative Dermatology” Hair follicle stem cells can change their role to ensure proper hair development.
December 2022 in “Communications biology” September 1973 in “Primates”
30 citations
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October 2021 in “Scientific Reports” Inhibiting glycogen metabolism can promote hair growth.
13 citations
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April 2018 in “Scientific Reports” The genes KRT25 and SP6 affect curly hair in horses, with KRT25 also causing hair loss. If both genes are mutated, the horse gets curly hair and hair loss. KRT25 can hide the effect of SP6.
January 2023 in “SKIN The Journal of Cutaneous Medicine” 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.
32 citations
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May 1999 in “Biochemical and Biophysical Research Communications” A new enzyme, BSSP, is found in high amounts in the hair follicles of nude mice.
46 citations
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January 1991 in “Tissue and Cell” The male silkmoth's antenna develops olfactory structures over 21 days, with full hair formation by day 15.
April 2026 in “Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy” 62 citations
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June 1993 in “Archives of Dermatological Research” January 2025 in “SSRN Electronic Journal”
February 2026 in “The European Physical Journal E” Root hair growth mechanics depend on turgor pressure and cell wall properties.
31 citations
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December 2010 in “Journal of the American Academy of Dermatology” Loose anagen hair syndrome is caused by structural abnormalities in the hair follicle's inner root sheath.
13 citations
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May 2022 in “Cell discovery” The study found new details about human hair growth and suggests that preventing a specific biological pathway could potentially treat hair graying.
July 2024 in “PLANT PHYSIOLOGY” CIPK13 and CIPK18 genes are crucial for root hair growth in plants.
November 2025 in “Probiotics and Antimicrobial Proteins” 12 citations
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January 2013 in “International Journal of Genomics” The study identified key genes involved in goat hair growth.
489 citations
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June 2005 in “The FASEB Journal” Human hair follicles can produce cortisol like the body's stress response system.
13 citations
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November 1959 in “Annals of the New York Academy of Sciences” Human hair follicles can grow back.
16 citations
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June 2005 in “Clinical and Experimental Dermatology” Twisted hair is rare in severe anorexia nervosa, found in only 2 out of 30 patients.
4 citations
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January 1992 in “The Tohoku Journal of Experimental Medicine” Zinc made mice's coarse hair turn into fine hair without affecting skin structure.