1 citations
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January 2018 in “Acta dermato-venereologica” A teenager's hair with alternating white and dark bands, known as Pili annulati, is a genetic condition that is usually harmless and often considered attractive.
January 2015 in “Springer eBooks” Healthy hair is crucial to avoid dryness, weakness, and breakage.
A natural compound called VB-1 can help promote hair growth by boosting a specific cell signal in human skin cells.
13 citations
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January 2001 in “Pediatric dermatology” A dark-haired Chinese girl had hair that looked banded under certain light but was normal under a microscope.
July 2019 in “Dermatologic Surgery”
20 citations
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July 2010 in “Skin Research and Technology” Aging makes hair thinner and rougher, with less clear edges.
9 citations
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January 1998 in “Studia Anglica Posnaniensia: international review of English Studies” Wound-induced hair growth may help study regeneration and aging, but it's unclear if this ability decreases with age.
August 2021 in “Journal of the American Academy of Dermatology”
5 citations
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January 1990 in “Journal of Society of Cosmetic Chemists of Japan” Permanent wave lotion can extract proteins from hair, especially when pH is higher, and repeated treatments or bleaching can damage hair.
19 citations
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October 2016 in “Journal of oncology pharmacy practice” A cancer patient's hair became permanently curly after treatment with nivolumab.
3 citations
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July 2021 in “Cutis” New military hair rules for women promote inclusivity and prevent hair damage.
1 citations
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April 2019 in “PubMed” The medulla in Asian scalp hair has a tubular structure that allows ions and large molecules to flow through it.
May 2025 in “International Journal of Trichology” Hair Heat Disease is caused by wet, oily hair and friction in hot, humid conditions.
January 2014 in “International Journal of Trichology” Hair is culturally and economically valuable, and its weight is now used to measure the effectiveness of hair growth treatments.
6 citations
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March 1986 in “PubMed” Valproic acid can cause weight gain and hair texture changes.
4 citations
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May 2011 in “Journal of The American Academy of Dermatology” Certain hairstyles increase the risk of scalp and hair disorders in African American girls.
11 citations
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January 2000 in “Journal of cosmetic science” Hydrolyzed wheat proteins penetrate all hair types effectively.
1 citations
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March 2000 in “Chemical & engineering news” Companies buy other businesses to stay trendy and meet consumer needs in hair care.
June 2023 in “British journal of dermatology/British journal of dermatology, Supplement” Tight hairstyles can cause a rare scalp condition with thick skin folds.
February 2025 in “International Journal of Cosmetic Science” A new amino acid derivative, ATS, improves hair texture and moisture, making it easier to straighten curly hair.
2 citations
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July 2012 in “PubMed” Ceramide-rich liposomes can effectively repair and strengthen damaged hair.
September 2018 in “PubMed” Hair becomes thinner, grayer, and may fall out more as people get older, and styling habits can worsen these effects.
15 citations
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January 2018 in “Annals of Dermatology” Wigs significantly improve the well-being of people with severe hair loss.
September 2016 in “Journal of dermatological science” The conclusion is that the variation in hair thinness in patients is mostly due to the amount of underdeveloped hairs, and treatments that thicken fine hairs might work for those with mild to severe conditions.
June 2023 in “Zenodo (CERN European Organization for Nuclear Research)”
1 citations
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July 2008 in “Expert Review of Dermatology” Normal hair thickness varies by scalp area and a mix of hair thicknesses is typical in healthy individuals.
1 citations
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January 2002 in “Springer eBooks”
12 citations
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February 2006 in “Lipids” Hair texture changes with age due to varying levels of lipids.
1 citations
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January 2017 in “Elsevier eBooks” Functional materials in hair care improve shine, volume, frizz control, color protection, and repair.