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November 1995 in “American Journal of Obstetrics and Gynecology” Taking vitamin B6 corrected a pregnant woman's metabolic disorder, which changed her hair color.
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November 1997 in “Journal of Forensic Sciences” Darker hair in guinea pigs holds more codeine than lighter hair.
February 2005 in “CRC Press eBooks” Hair color is due to active pigment cells in hair during growth.
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June 2025 in “International Journal of Molecular Sciences” Carthamus caeruleus root juice may reduce inflammation.
January 2024 in “Biological & clinical sciences research journal” Apigenin, found in plants and vegetables, has many health benefits, including anti-inflammatory, antioxidant, and anticancer effects.
March 2021 in “International journal for research in applied science and engineering technology” Herbal hair dyes from tannin-rich plants are effective and safer than synthetic dyes.
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January 2016 in “ACG Case Reports Journal” Long-term Cape Aloe use causes harmless colon pigmentation that can help detect polyps.
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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.
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November 2023 in “Frontiers in cell and developmental biology” Melanocytes are important for skin and hair color and protect the skin from UV damage.
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November 2015 in “Trends in biotechnology” Gene regulation could revolutionize hair color by altering pigmentation from within.
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April 2021 in “Chemical & Pharmaceutical Bulletin” Extracts from the Calanthe discolor plant promote hair follicle growth and increase growth factor levels.
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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.
November 2023 in “Journal of the American Academy of Dermatology” Skin of color can spontaneously repigment after a phenol-croton oil chemical peel.