November 2017 in “Koubunshi rombunshuu/Kōbunshi ronbunshū” Hematin in shampoo helps repair and straighten damaged hair.
40 citations
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August 2006 in “Current Drug Safety” Some drugs can cause hair loss, excessive growth, or color changes, often reversible but sometimes permanent.
January 2014 in “University of the Arts London Research Online (University of the Arts London)” Certain ingredients can help protect hair color.
January 1996 in “Journal of Investigative Dermatology” 36 citations
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July 2004 in “Journal of Controlled Release” The dye quickly penetrates hair follicles, mainly through the gap, not the surrounding skin.
9 citations
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October 1982 in “PubMed” 4 citations
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September 1944 in “The American Journal of the Medical Sciences”
2 citations
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August 2016 in “Lasers in Surgery and Medicine” Photodynamic therapy can remove nonpigmented hair in mice and might work for humans.
14 citations
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September 2016 in “Journal of Photochemistry and Photobiology B Biology” UV exposure damages hair, increasing thiols and altering protein structure.
April 2018 in “Journal of Investigative Dermatology” The research found that a specific skin cell type not only triggers hair growth but also controls hair color, and that aging can lead to hair loss and color changes.
82 citations
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January 1997 in “Forensic science international” Drugs can be incorporated into hair based on their chemical properties and hair pigmentation.
3 citations
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January 2004 in “Sen i Gakkaishi” DTDG in hair treatments reduces damage and preserves hair structure.
8 citations
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March 2015 in “Molecular Medicine Reports” Hair dye ingredient PPD causes cell death and aging in human hair cells by altering microRNA levels.
15 citations
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January 1954 in “Endocrinology” Iodine in rat hair is linked to hair growth.
June 2023 in “Zenodo (CERN European Organization for Nuclear Research)”
3 citations
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May 2010 in “Archives of dermatology” Herpes zoster infection can cause permanent hair color change in the affected area.
23 citations
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April 2002 in “Journal of the American Academy of Dermatology” Depigmented hair regrowth after alopecia areata can be permanent.
9 citations
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June 1959 in “Archives of dermatology” Hair can darken after inflammation and then return to its original color.
September 2010 in “International Journal of Cosmetic Science” Chemical treatments change hair surface properties, making it more hydrophilic and able to bind conditioners.
January 2000 in “Optics Letters” Laser treatment can inhibit hair growth and different hair colors reach different temperatures when lasered.
13 citations
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February 2008 The new natural sindoor is safe, non-toxic, and eco-friendly.
16 citations
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October 2003 in “Journal of applied polymer science” 2-iminothiorane hydrochloride improves hair waving permanence without damage.
October 2022 in “Southeast Asian journal of health professionals” Hair greying is seen as a sign of aging; temporary fixes like hair dye are used, but a balanced diet and hair care can help manage it.
September 2018 in “CRC Press eBooks” Hair and nail disorders can cause changes in scalp pigmentation, especially with sun exposure and alopecia.
4 citations
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July 2021 in “Skin Appendage Disorders” Sudden hair whitening may be linked to immune system activity.
December 2023 in “Forensic science international. Genetics” The RapidHIT ID system can effectively get DNA profiles from hair roots with enough cells.
21 citations
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October 2007 in “Australasian Journal of Dermatology” A woman with hair loss regrew white hair after taking prednisolone.