1 citations
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December 2021 in “Annals of phytomedicine” This study found that a herbal hair dye formulated with a 1:2 ratio of henna and indigo successfully colored unpigmented hair dark brown to black, with favorable attributes compared to synthetic dyes.
April 2024 in “Pharmacognosy research” In this study, researchers developed a herbal hair dye using henna and other natural ingredients that achieved a color similar to natural black on blonde hair, though further testing on various hair shades is needed to explore its full benefits.
March 2021 in “International journal for research in applied science and engineering technology” In this study, researchers explored the use of natural herbal hair dyes made from tannin-producing plants like henna and pomegranate, reporting that these dyes can permanently color hair without causing damage or irritation, unlike synthetic dyes.
9 citations
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January 2010 This study reports that a 100% herbal hair dye composed primarily of Cymphomandra betacea, Tagetes erecta, and Aloe vera gel provides permanent hair color without causing hair damage, loss, or skin irritation compared to synthetic dyes.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers formulated a herbal hair dye with natural ingredients, including Barleria prionitis, and found it to be stable, effective, and a promising natural alternative to chemical dyes, enhancing color intensity and hair conditioning compared to formulations without this component.
