TLDR Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
The study explored a novel hair dyeing method using polydopamine and ferrous ions to create eumelanin-based pigments for gray hair coloration. This method aimed to provide a safer alternative to traditional dyes, which often contain harmful chemicals like p-phenylenediamine (PPD). The results showed that polydopamine effectively coated hair fibers, resulting in stable and natural-looking color. Toxicity tests on ICR mice indicated that polydopamine-based dyes were less toxic compared to PPD. The findings suggested that this method could be a promising, safer, and more sustainable option for hair dyeing.
20 citations,
June 2011 in “ISRN Dermatology (Print)” A woman lost most of her hair due to an allergic reaction to a hair dye ingredient.
31 citations,
June 2010 in “Journal of dermatology” Hair bleaching causes significant damage to hair and skin.
152 citations,
December 2003 in “Micron” As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.
203 citations,
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Nanocarriers with plant extracts show promise for safe and effective hair growth treatment.
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December 2021 in “Journal of Nanobiotechnology” The nanofibers effectively treated infected diabetic wounds by killing bacteria and aiding wound healing without toxicity.
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December 2022 in “Middle East Journal of Science” Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.
5 citations,
February 2022 in “Acta Biomaterialia” Nanomaterials can improve hair care products and treatments, including hair loss and alopecia, by enhancing stability and safety, and allowing controlled release of compounds, but their safety in cosmetics needs more understanding.
5 citations,
July 2023 in “International journal of biological macromolecules” The new wound dressing material speeds up healing, fights infection, and outperforms traditional dressings.
