Hair loss is caused by hormonal changes that shorten hair growth phases and shrink hair follicles.
October 2019 in “The Egyptian Journal of Hospital Medicine” Both hair transplantation and skin expansion are effective for treating cicatricial alopecia, with the best method depending on the patient's age, alopecia size, and other factors.
September 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicles repair 3D injuries using a 2D healing process.
January 2014 in “SciDok (Saarland University and State Library)” Nanoparticles can effectively enter hair follicles and stimulate immune responses, supporting potential transfollicular vaccination.
May 2013 in “Zhonghua miniao waike zazhi” Hair follicle stem cells work well with bladder matrix for bladder repair.
September 2008 in “Acta Ophthalmologica” Hair follicle stem cells can become corneal-like cells with the right environment.
January 2001 in “Nishi Nihon hifuka” The document concluded that there are differences in hair growth cycles and skin cell turnover rates, which can be measured with electronic equipment.
September 1989 in “PubMed” The method allows detailed observation of hair tissue structures.
177 citations
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April 2008 in “Biomedical Materials” Human hair proteins can be used to create scaffolds that support cell growth for tissue engineering.
28 citations
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May 2014 in “PubMed” Higher stress levels may be linked to hair loss in rhesus macaques.
17 citations
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June 1990 in “PubMed” Hair varies in size and features depending on body region.
2 citations
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July 2008 in “Hair transplant forum international” MRSA infections can occur in hair transplant surgeries, so it's important to test for it before treatment, keep everything clean, and follow treatment based on test results.
Dark hair with a red beard likely evolved for camouflage, not attraction.
66 citations
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December 2016 in “Frontiers in Plant Science” Some rice types grow better roots for phosphorus uptake, but not all do.
37 citations
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October 2015 in “PeerJ” Perming significantly changes hair's molecular structure, while shampoo and conditioner do not.
32 citations
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December 2014 in “Journal of experimental botany” Certain proteins are essential for the growth of root hairs in barley.
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.
A natural hair dye from cuttlefish ink and chitosan effectively colors hair black without harmful chemicals.
A natural, eco-friendly treatment using casein and tannic acid strengthens hair by 21% while keeping it elastic.
June 2025 in “OPAL (Open@LaTrobe) (La Trobe University)” A new hair dye method uses polyphenols and oxidation to create a long-lasting brown color on gray hair.
May 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” KAP-depleted hair causes less immune response and is more biocompatible for implants.
200 citations
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November 1997 in “Planta” Calcium affects where root hairs grow, but other unknown factors determine their growth direction.
161 citations
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April 2006 in “Journal of Investigative Dermatology” Liposomes with certain properties can effectively deliver drugs deep into hair follicles.
64 citations
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December 2012 in “Stem Cell Reviews and Reports” Human hair follicle cells can be turned into stem cells similar to embryonic stem cells.
9 citations
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May 2013 in “European Journal of Dermatology” Dermoscopy can non-invasively detect eruptive vellus hair cysts on the labia majora.
3 citations
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April 2023 in “Research Journal of Pharmacy and Technology” Calendula Officinalis extract can be used to create an effective natural hair dye.
3 citations
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January 2015 in “Sen i Gakkaishi” The new keratin film without KAPs stains better and could help study keratin functions.
2 citations
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July 2023 in “Agronomy” Melatonin helps wheat plants resist drought by improving their root and root hair growth.
1 citations
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January 2010 in “Han-guk hyeonmigyeong hakoeji/Applied microscopy” Straight permed hair loses weight faster than virgin hair when heated, but ends up heavier after burning.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Herbal shampoos are a safe, eco-friendly choice for healthy hair.