January 2025 in “International Journal of Advanced Research in Science Communication and Technology” Results are not reported for this study exploring how herbal hair dye, made from natural plant-based ingredients, might promote glossier, longer, and thicker hair while covering gray.
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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.
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study prepared a herbal hair dye using extracts from various herbs like Ratanjot, Henna, and Amla, known for their antibacterial and antioxidant properties, and evaluated its characteristics and effects through organoleptic and physico-chemical assessments, among other tests.
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers developed and evaluated an herbal hair dye using extracts from plants like henna and amla, which possess antibacterial and antioxidant properties, and found favorable results through various tests such as organoleptic and physico-chemical evaluations.
August 2022 in “Zenodo (CERN European Organization for Nuclear Research)” This study evaluated various herbal combinations for hair coloring and found that a formulation of Henna and Indigo provided a natural reddish-brown color with better retention compared to marketed herbal hair dyes, without using synthetic agents that can cause allergic reactions.