COVID-19 might cause gray hair to regain color.
November 2022 in “Cosmetics” Red pigmented rice, like Sang-Yod rice, could help promote hair growth and prevent hair loss.
April 2023 in “Asia-pacific Journal of Convergent Research Interchange” Hair manicure improves the strength and condition of bleached hair.
12 citations
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July 2012 in “Journal of Applied Polymer Science” Botanical extracts can protect and repair bleached hair.
4 citations
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March 2020 in “Scientific Reports” Scientists created a colored thread-like material containing a common hair loss treatment, which slowly releases the treatment over time, potentially offering an effective, neat, and visually appealing solution for hair loss.
13 citations
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March 2019 in “Journal of cosmetic dermatology” Heat damages hair, with Asian hair losing more protein than Caucasian hair.
8 citations
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August 2015 in “Journal of dermatological science” Rhododendrol in skin-whitening products can cause skin depigmentation and immune reactions.
73 citations
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October 2003 in “Journal of Pharmacology and Experimental Therapeutics” Hair color loss can indicate the effectiveness of a drug targeting the KIT protein in mice and humans.
Prussian Blue causes hair cuticles to detach, weakening the hair.
Hair turning darker can be a sign of skin cancer.
January 2024 in “International Journal of Herbal Medicine” Melanin is important for hair color, health, and UV protection.
8 citations
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October 2014 in “Journal of analytical toxicology.” Chemical hair straightening significantly reduces detectable drug levels in hair.
March 2026 in “Indian Dermatology Online Journal” Hair dye ingredient PPD can cause severe allergic reactions, including facial swelling.
February 2022 in “Cosmetic Dermatology” Permanent hair waving uses chemicals to create long-lasting curls.
January 2025 in “Digital Repository (National Repository of Grey Literature)” Red hair is linked to worse health, especially in women.
193 citations
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January 2015 in “International journal of trichology” Dermatologists need to understand hair products to treat hair and scalp issues better.
17 citations
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June 2001 in “Journal of the National Cancer Institute” A specific hair diffraction pattern may indicate breast cancer if tested with the correct method.
March 2010 in “International Journal of Cosmetic Science” Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.
2 citations
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July 1994 in “Journal of Dermatological Science” Grafted human scalp samples on mice can produce human hair, useful for studying hair genetics.
Minoxidil can cause hair to turn yellow.
Hair care products can cause skin irritation and allergies.
2 citations
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January 2022 1 citations
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January 2020 June 2014 in “Professional Beauty” 29 citations
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April 2011 in “Journal of Microscopy” The modified osmium method improves hair cortex staining for better visualization.
2 citations
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January 1972 Hair can measure exposure to radioisotopes.
10 citations
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September 2020 in “Biopolymers” Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.
82 citations
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May 2005 in “Dermatologic therapy” Laser hair removal has advanced to effectively reduce hair for various skin types and hair colors.
10 citations
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January 1994 Hair can be straightened using different chemicals, not just strong alkali.
16 citations
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July 2016 in “Journal of Dermatological Science” Regenerated hairs can regain their color if the wound occurs during a certain stage of hair growth, and this process is helped by specific skin cells and proteins.