Acidic sandy clay damages archaeological hair the most, while dry conditions preserve but make it brittle; silicone oil can help keep the hair flexible.
September 2018 in “University of the Arts London Research Online (University of the Arts London)” L-arginine, hydrolysed keratin, and cystine-silanol copolymer can help protect hair from damage during and after bleaching.
1 citations
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June 2025 in “Journal of Cellular and Molecular Medicine” Plant-derived compounds may help reverse grey hair by boosting melanin production.
August 2024 in “Applied Sciences” Plant extracts may help prevent or reverse hair graying.
18 citations
,
January 2008 in “Sen'i Gakkaishi” Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.
1 citations
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September 2024 in “Quality in Sport” Hair graying can be delayed or prevented with antioxidants, lifestyle changes, and genetic therapy.
June 2025 in “Cell Regeneration” Lack of a certain enzyme causes hair to grey early by damaging stem cells, but an antioxidant can help prevent this.
June 2009 in “Pigment Cell & Melanoma Research” Preventing hair graying may be possible by managing oxidative stress and activating melanocyte stem cells.
7 citations
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March 1990 in “Pigment Cell Research” Certain chemicals cause hair graying in black mice but not yellow mice.
2 citations
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May 2000 in “Additives for Polymers” Plant-based remedies and a multimodal approach can help manage hair loss.
December 2022 in “Small methods” A new hair loss treatment using dissolving microneedles was found to speed up hair growth and was more effective than daily use of common hair growth drugs.
3 citations
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January 2009 in “Sen'i Gakkaishi” Using both TGA and DTDG in hair straightening reduces hair damage compared to using TGA alone.
1 citations
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September 2008 in “International Journal of Cosmetic Science” Using chelants in hair dye reduces fiber damage by preventing harmful radicals.
1 citations
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October 2010 in “Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE” The skin fully recovered after using the optical clearing agent, showing no long-term harm.
December 2023 in “Journal of Medicinal Chemistry” A new topical treatment for hair loss shows strong hair growth effects with low toxicity.
December 2025 in “International Journal of Research in Dermatology” The Ayurvedic treatment safely and effectively restores natural hair color by increasing black hair and reducing grey hair.
25 citations
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November 1994 in “The Journal of Dermatologic Surgery and Oncology” Acetone is not more effective than other degreasers and is more flammable.
1 citations
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July 2023 in “International Journal of Biological Macromolecules” The study created a new hair loss treatment paste that regrows hair faster and with fewer side effects than minoxidil alone.
November 2025 in “Advanced Healthcare Materials” Charge-conversion chemistry improves hair-rebonding by enhancing penetration and strength.
April 2018 in “Journal of Investigative Dermatology” A new treatment using AGED to modulate PPAR-γ shows promise for treating scarring hair loss by protecting and repairing hair follicle cells.
16 citations
,
October 2003 in “Journal of applied polymer science” 2-iminothiorane hydrochloride improves hair waving permanence without damage.
January 2011 in “Journal of Society of Cosmetic Chemists of Japan” 18-MEA and SPDA can restore damaged hair's smoothness and reduce frizz.
13 citations
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January 1995 in “Journal of the American Institute for Conservation” Researchers developed a less damaging way to extract red dyes from wool using EDTA and DMF, preserving the fiber's strength for further analysis.
March 2011 in “Focus on surfactants” Several companies launched new hair care ingredients in 2011 to improve conditioning, color retention, combability, and heat protection.
February 2026 in “American Scientific Research Journal for Engineering, Technology, and Sciences (Global Society of Scientific Research and Researchers)” Gray hair requires special coloring techniques and care to maintain quality and strength.
January 2014 in “University of the Arts London Research Online (University of the Arts London)” Certain ingredients can help protect hair color.
63 citations
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February 2017 in “ACS biomaterials science & engineering” Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
11 citations
,
January 2017 in “Oxidative medicine and cellular longevity” Antroquinonol may help prevent skin depigmentation by suppressing certain immune cells.
1 citations
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June 2023 in “Skin Research and Technology” Hair-coating shampoos dye better initially, but hair-oxidation shampoos keep color longer and may damage hair more.