Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
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January 2015 in “Pharmacognosy Research” In this study, the herbal hair colorant formulation HD-3, with a mix of specific herbs, was most effective at coloring hair and highly accepted by volunteers.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers developed a herbal mehendi gel using natural plant-based ingredients aimed at providing sustainable hair coloring and scalp care. The formulation demonstrated beneficial properties including natural hair coloring, scalp conditioning, antimicrobial activity, antioxidant action, and safety with no observed skin irritancy.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study evaluated a herbal mehendi gel formulated for natural hair coloring and scalp care, finding it safe for topical use and demonstrating benefits like natural coloring and scalp conditioning.
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study formulated an herbal hair dye using the medicinal herb Eclipta alba and other natural ingredients, finding it provided satisfactory coloring effects, conditioning benefits, stability, and safety, which supports its potential as a natural alternative to synthetic hair dyes.