53 citations
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January 2009 in “Journal of Investigative Dermatology” UVB radiation harms hair growth and health, causing cell death and other changes in human hair follicles.
50 citations
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March 2001 in “Clinics in dermatology” Human hair is complex and grows in cycles starting from embryonic life.
11 citations
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November 1966 in “Experimental Biology and Medicine” Hair diameter can indicate protein status in malnourished children if sample location is controlled.
January 2015 in “Springer eBooks” Hair health is influenced by genetics, aging, and environmental factors, with proper care needed to maintain it.
8 citations
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March 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” The near-naked hairless mutation causes hair loss but is not due to a mutation in the hairless gene itself.
August 2009 in “PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia)” Noni fruit extract speeds up hair growth in rabbits.
October 2005 in “Nature reviews. Molecular cell biology (Print)” Hairless protein is key for hair growth, cell differences cause gene expression variation, and the N-end rule pathway senses nitric oxide for protein breakdown.
12 citations
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November 1987 in “Pediatric dermatology” Four children had unmanageable pale blond hair due to uncombable-hair syndrome.
October 2024 in “Cosmetics” Afro-textured hair needs personalized care due to its unique genetic traits.
December 2021 in “Asian journal of pharmaceutical and clinical research” The homemade hair oil made from natural ingredients helps hair grow, reduces hair fall, dandruff, and graying, and makes hair shiny with few or no side effects.
Researchers developed a new model for more realistic computer graphics of hair by considering how light scatters on hair fibers.
58 citations
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November 1969 in “British Journal of Dermatology” Netherton's disease causes multiple hair defects.
82 citations
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November 1959 in “Annals of the New York Academy of Sciences”
September 2025 in “International Journal of Ayurvedic Medicine” Hair medulla patterns vary by Prakruti type, affecting hair strength.
July 2011 in “Microscopy and microanalysis” Human hair's structure makes it tough and resistant to breaking.
7 citations
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June 1967 in “Journal of Investigative Dermatology” Plucking hairs in a certain way can result in intact hair roots, not related to baldness.
66 citations
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September 2005 in “Photochemical & photobiological sciences” We don't fully understand how sunlight damages different types of hair.
15 citations
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May 2013 in “International Journal of Cosmetic Science” Different ethnic hair types have unique nanoscopic and molecular features despite having the same basic keratin structure.
1 citations
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July 2017 in “Skin appendage disorders” A 9-year-old Hispanic girl has Uncombable Hair Syndrome, which may improve with age and biotin treatment.
57 citations
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November 1987 in “Pediatric Dermatology” Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.
1 citations
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December 2023 Hair grows in cycles and changes with age, starting from fetal development.
17 citations
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June 1990 in “PubMed” Hair varies in size and features depending on body region.
25 citations
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May 2011 in “Annals of Plastic Surgery” Nonhead hair transplantation is effective for patients with limited head donor hair, but more research is needed.
13 citations
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December 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Nicotinamide applied to the scalp can slow down hair growth.
7 citations
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January 2001 in “Comprehensive series in photosciences” UV radiation significantly damages hair, especially with humidity, making it more vulnerable to further damage.
November 2011 in “Informa Healthcare eBooks” Environmental, chemical, mechanical, and personal health factors can all damage hair and contribute to hair loss or changes in hair quality.
3 citations
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January 2021 in “Wear” Hair's resistance to wear varies by ethnicity and treatment, with less wear indicating stronger hair.