May 2026 in “International Journal of Research Publication and Reviews” The researchers reported that a polyherbal hair dye using Phyllanthus reticulatus fruit provided effective color, stability, and scalp compatibility without irritation, positioning it as a safe and eco-friendly alternative to synthetic dyes.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This review summarizes current research on natural hair dyes, reporting that plant-based formulations can safely provide viable colors on gray hair with minimal irritation compared to synthetic options but face challenges in color range and consistency.
December 2025 in “Journal of Pharma Insights and Research.” This study explains the formulation and evaluation of a natural polyherbal shampoo, which effectively colors hair and provides conditioning without the dermal and systemic toxicity risks of synthetic dyes, offering an effective alternative to conventional products.
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.
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.
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers formulated a herbal hair dye using Eclipta alba and evaluated it for various parameters, finding it provided satisfactory coloring, conditioning, and stability without irritation, supporting its potential as a safer alternative to synthetic dyes.
March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study formulated and evaluated a polyherbal hair dye using Phyllanthus reticulatus fruit and other natural ingredients, reporting that the dye provided satisfactory color, stability, scalp pH compatibility, and did not cause irritation, also demonstrating antioxidant and antimicrobial properties that benefit scalp health.
5 citations
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January 2011 in “International Journal of Cosmetic Science” This study found that 1,2,3,4-tetrahydroquinoline derivatives, particularly N-methyl-7-amino-1,2,3,4-tetrahydroquinoline, may be excellent blue dye candidates for human hair, offering superior color purity, stability, and fastness compared to 2,3-dihydroindoles.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, a herbal hair dye was formulated and tested, showing good stability and quality. The addition of Barleria prionitis flower enhanced color intensity and conditioning effects, suggesting it as a safe and effective natural alternative to chemical dyes.
1 citations
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January 2010 in “LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas)” In this study, adding conditioning agents PA1, PA2, and PA3 to light blonde oxidative hair dyes improved combability and protein retention of light brown hair without affecting tensile strength, though PA1 and PA2 offered enhanced thermal protection.
November 2025 in “Journal of Ayurveda and Integrated Medical Sciences” This study evaluated an herbal hair dye made from plant-based ingredients, finding it stable, non-toxic, and effective in providing lasting color, improving hair texture, and reducing hair fall, making it a viable and eco-friendly alternative to chemical dyes.
This study developed a natural hair dye using Coreopsis tinctoria Nutt. extract, finding that it produced yellow to dark brown colors depending on the treatment, with ferrous lactate enhancing dye performance and color stability after washing.
March 2025 in “International Journal of Advanced Research in Science Communication and Technology” This study explores the potential of herbal hair dyes as eco-friendly alternatives to synthetic dyes, highlighting their natural coloring ability and additional benefits like scalp nourishment and hair strengthening, while evaluating factors such as pH, spreadability, and color fastness.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study developed a herbal hair dye gel using natural ingredients like henna and amla, which was found to provide natural color, improve hair texture, and clean the scalp without causing irritation, making it a safe and effective alternative to chemical hair dyes.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study found that a herbal hair dye gel made from natural ingredients like henna and amla showed promising results in providing natural color and hair health benefits without causing irritation, offering a safer alternative to chemical hair dyes.
March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study developed and evaluated a polyherbal hair dye using Phyllanthus reticulatus fruit, finding it to be a safe, effective, and environmentally friendly alternative to synthetic dyes, with added antioxidant and antimicrobial benefits for scalp health.
November 2025 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers formulated a herbal hair dye using natural ingredients like indigo and henna, finding that it provides excellent color, better dye retention, and is more environmentally friendly compared to conventional chemical hair dyes, without side effects.
November 2025 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers developed a herbal hair dye using ingredients like Indigo, Henna, and amla, which showed excellent color retention and were found to be more eco-friendly and safer for health compared to traditional chemical hair dyes.
This study evaluated various herbal blends of powdered leaves, including Henna and Indigo, for their coloring and sensitivity reactions, finding Henna and Indigo to be effective natural colorants for achieving a reddish-brown hair color with better retention than marketed herbal hair dyes.
1 citations
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October 2023 in “PloS one” This study found that testosterone concentrations in hair samples were moderately stable over three months, with cosmetic treatments like coloring increasing testosterone levels, while natural hair color in untreated hair did not affect testosterone measurements.
4 citations
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October 2022 in “Elsevier eBooks” This review discusses the benefits of plant-derived biosurfactants for cleaning and personal care, highlighting their environmental friendliness, cost-effectiveness, and positive effects on skin and hair, such as strengthening hair follicles and promoting growth, with a focus on saponin-rich Indian plants.
March 2026 in “Dyes and Pigments” This study found that genipin-based pigments, accelerated by riboflavin and blue-light photocatalysis, achieved commercial-level hair dye results with enhanced gloss and excellent color retention while reducing cuticle disruption, offering a potentially safer and faster alternative to traditional hair coloration methods.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” In this review, the authors highlight the growing use of herbal cosmetics in the personal care industry due to their health benefits, emphasizing the importance of quality control and safety in these increasingly popular natural formulations.
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study reviewed the properties and safety of henna as a hair dye and found it to be safer than synthetic dyes but with limitations in color range and stability.
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This review highlights that henna (Lawsonia inermis) presents a safer alternative to synthetic hair dyes, though its color range and stability are limited; it emphasizes the need for advanced formulations and global regulatory harmonization to enhance henna's acceptance as a standardized hair dye.
5 citations
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February 2019 in “Journal of oceanology and limnology (Online)” This study found that adding 7% Ecklonia cava extract to oxidative hair dyes significantly reduced their cytotoxicity and oxidative stress without affecting color performance.
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.
63 citations
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August 1996 in “Forensic Science International” In this study, bleaching and perming were found to significantly reduce opiate concentrations in both spiked and naturally opiate-positive human hair samples.
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.