March 2010 in “Cosmetic Dermatology” Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.
November 2016 in “The Molecular Biology Society of Japan” 23 citations
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July 1994 in “Journal of Dermatological Science” Pili torti hair twists due to uneven outer root sheath cell development.
7 citations
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January 2017 in “International Journal of Trichology” Chemotherapy and certain hair care practices can cause severe hair matting.
May 2015 in “Journal of The American Academy of Dermatology” A woman with Parry-Romberg syndrome developed new curly hair on one side of her scalp, a condition not previously linked to the syndrome.
August 2003 in “Dermatologic Surgery” Craig Ziering created a system to classify scalp hair patterns, important for improving hair restoration surgery results.
December 2025 in “Brazilian Journal of Hair Health” The Spiral Model helps understand hair growth changes with age and identify hair problems early.
44 citations
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October 1990 in “Archives of Dermatological Research” The connective tissue around hair follicles changes structure throughout the hair cycle.
6 citations
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August 1937 in “Journal of the Society of Chemical Industry”
November 2025 in “Nature Communications” Hair growth may involve a pulling force from the outer root sheath.
15 citations
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January 1989 in “European Journal of Cancer and Clinical Oncology”
January 2005 in “Seibutsu Butsuri/Seibutsu butsuri” Chemical treatments damage hair more than UV exposure, making it thinner and less flexible.
2 citations
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May 2020 in “Journal of the American Academy of Dermatology” Hair shaft changes may be linked to CCCA, but their role is unclear.
Different treatments change the strength and flexibility of human hair.
3 citations
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January 2018 in “International Journal of Cosmetic Science” Hair stiffness increased by 13.2% after caffeine treatment, validating the Stiffness-Angle Law as an effective measurement method.
January 2025 in “SSRN Electronic Journal” February 1999 in “The anatomical record” Two mouse mutants have defective hair cuticle cross-linking.
February 2025 in “Journal of Women & Aging” Older Black women in the UK feel more confident and engaged when their hair is visible and celebrated.
1 citations
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June 2014 in “[Thesis]. Manchester, UK: The University of Manchester; 2014.” Chemical modifications can alter hair's stability and flexibility, with hydrophobic interactions helping maintain structure in humid conditions.
November 2021 in “International journal of research - granthaalayah” The document suggests that human hair has electrical charges because of a gap in nerve cell coverage that affects electromagnetic radiation.
February 2022 in “Cosmetic Dermatology” Different hair care methods affect hair health and appearance, and there are many ways to camouflage hair loss.
73 citations
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October 2013 in “International Journal of Cosmetic Science” Chemical hair straightening can damage hair and health, needing safer alternatives and stricter regulations.
1 citations
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December 2022 in “Research Square (Research Square)” Certain health conditions and hair care habits affect the treatment results for a scalp condition called Central Centrifugal Cicatricial Alopecia.
2 citations
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January 1981
February 2026 in “Journal of the Korean Society of Cosmetology” Silicone oil viscosity affects hair curling and damage during treatments.
12 citations
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March 2004 in “Journal of Investigative Dermatology”
June 2023 in “British journal of dermatology/British journal of dermatology, Supplement” Tight hairstyles can cause a rare scalp condition with thick skin folds.
34 citations
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August 1966 in “Experimental cell research” Keratin fibrils in hair form and stop growing at specific points in the follicle.
January 1994 in “Journal of the society of cosmetic chemists”