Gray hair affects hair's movement and appearance, making it less bouncy and more wavy.
Researchers made a mouse model with curly hair and hair loss by editing a gene.
3 citations
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May 2009 in “International Journal of Cosmetic Science” Relaxer treatments damage African–American hair, with commercial products causing more harm than lab-made solutions.
research Hair
November 2005 in “CRC Press eBooks” Hair and skin are closely linked, and hair products can affect skin health.
6 citations
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January 2021 in “Journal of the mechanics and physics of solids/Journal of the Mechanics and Physics of Solids” The model shows that factors like follicle shape and stiffness are key for hair growth and anchoring.
November 2025 in “Contraception” COC use doesn't increase hair stress hormone levels, but hair treatments may affect results.
4 citations
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January 2020 in “Elsevier eBooks” Natural polymers can protect, repair, and promote hair regrowth.
18 citations
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August 2014 in “Lipids” Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.
July 2020 in “International journal of biology sciences” Coconut oil mixed with egg yolk and vitamin E may improve rabbit hair growth more than other plant oils.
15 citations
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July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
June 2023 in “British journal of dermatology/British journal of dermatology, Supplement” Tight hairstyles can cause a rare scalp condition with thick skin folds.
26 citations
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January 2019 in “Experimental Dermatology” Researchers created early-stage hair-like structures from skin cells, showing how these cells can self-organize, but more is needed for complete hair growth.
59 citations
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August 1981 in “PubMed” Trichilemmal keratinization is a unique process in hair follicles where the outer root sheath turns into keratin without a specific layer.
March 2005 in “International Journal of Cosmetic Science” DVI provides detailed 3D imaging of hair and shows how various products protect and enhance hair.
10 citations
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November 2016 in “International Journal of Cosmetic Science” A tough membrane between the outer and inner layers of human hair protects it from damage.
March 2010 in “International Journal of Cosmetic Science” Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.
22 citations
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May 2021 in “Nature Communications” Tissue stiffness affects hair follicle regeneration, and Twist1 is a key regulator.
January 2016 in “Case reports in clinical medicine” A 6-year-old girl was diagnosed with a rare hair disorder called monilethrix.
January 2023 in “Journal of Survey in Fisheries Sciences” The herbal oil significantly improved hair growth and reduced hair loss.
1 citations
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January 1997 in “Skin Pharmacology and Physiology” Premature infants have less elastic hair than full-term infants.
August 2021 in “Prosiding Farmasi” Certain herbal extracts mixed with coconut oil can effectively promote hair growth.
Hydrophobic modifications make human hair less affected by water.
30 citations
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January 1999 in “Journal of Cutaneous Pathology” Spiny keratoderma may be ectopic hair formation on palms and soles.
12 citations
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September 1982 in “Journal of Investigative Dermatology” June 2023 in “Zenodo (CERN European Organization for Nuclear Research)” 7 citations
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July 2011 in “Archives of Dermatology” Alopecia areata caused a boy's hair to regrow straight instead of curly, but the exact reason is unknown.
October 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Herbal hair oils are safe and effective for healthy hair and scalp.
October 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Herbal hair oils are safe and effective for healthy hair and scalp.
107 citations
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December 2013 in “International Journal of Dermatology” The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.