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      research The Herbal Hue: Formulation and Evaluation of Herbal Hair Dye

      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.

      research Olfactory receptor OR2AT4 regulates human hair growth

      82 citations , September 2018 in “Nature Communications”
      This study found that stimulating the olfactory receptor OR2AT4 in human hair follicles with a synthetic sandalwood odorant promotes hair growth ex vivo by decreasing apoptosis and increasing IGF-1 production.

      research Review on Herbal Hair Dye

      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.

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