17 citations
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January 2015 in “Pharmacognosy Research” A herbal mix, especially with Jatamansi, effectively darkens gray hair.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal mehendi gel safely colors hair naturally while nourishing and protecting the scalp.
January 2004 in “Linchuang pifuke zazhi” A man lost hair permanently from a salon burn, and surgery was needed to fix the scar.
December 2023 in “Modern engineering and innovative technologies” 17 citations
,
January 2013 in “International Journal of Cosmetic Science” Higher metal levels in hair are linked to poorer perceived hair health.
January 2011 in “Journal of Society of Cosmetic Chemists of Japan” 18-MEA and SPDA can restore damaged hair's smoothness and reduce frizz.
June 2010 in “DR-NTU (Nanyang Technological University)” Hair coloring and chlorine change hair strength differently.
January 2005 in “Seibutsu Butsuri/Seibutsu butsuri” Chemical treatments damage hair more than UV exposure, making it thinner and less flexible.
April 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Natural plant-based hair dyes are safer and eco-friendly alternatives to synthetic dyes.
April 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Natural hair dyes using plants like henna and indigo are safer and eco-friendly alternatives to synthetic dyes.
February 2021 in “Journal of the Korean Society of Cosmetology” Castor oil improves the texture of bleached hair by increasing its strength.
September 2018 in “PubMed” Hair becomes thinner, grayer, and may fall out more as people get older, and styling habits can worsen these effects.
19 citations
,
May 2010 in “Surface and interface analysis” 18-MEA is essential for hair's water resistance, and a conditioner with 18-MEA and SPDA can restore it.
6 citations
,
October 2003 in “Journal of applied polymer science” A new method using poly(ethylene imine) improves hair dyeing at lower temperatures with better color retention.
13 citations
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March 2010 in “International Journal of Cosmetic Science” Hair coloring increases copper and calcium uptake, damaging hair and reducing shine.
Bleaching hair twice makes it very dry and weak.
February 2003 in “Journal of Cutaneous Medicine and Surgery” Fine hairs improve male pattern baldness treatment, alopecia areata causes remain unknown, and hair can recover from dye damage over time.
January 1996 in “대한피부과학회지” Wait at least 8 weeks between hair dyeing for cuticle recovery.
5 citations
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January 2004 in “Journal of applied polymer science” Urea helps hair dye penetrate better and last longer.
November 2025 in “International Journal of Science and Research Archive” Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
November 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The natural hair dye is safe, effective, and good for scalp health.
March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The natural hair dye is safe, effective, and good for scalp health.
October 2024 in “UNESP Institutional Repository (São Paulo State University)” Straightening and dyeing damage hair structure.
September 2011 in “Daehan miyong hakoeji” Henna orange powder, especially with alkali, protects and colors hair better than oxidizing colorants.
January 2010 in “Elsevier eBooks” Hair color is important in many fields and is measured for various purposes.
6 citations
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March 2015 in “Journal of The American Academy of Dermatology” Hair dye can make it hard to diagnose scalp conditions correctly.
2 citations
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July 2013 in “Fashion business” Keratin essence protects and improves damaged hair.
6 citations
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January 2020 in “Elsevier eBooks” Nanoparticles could make hair dyes safer by reducing harmful effects.