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What is the most natural form of hair dye

Henna is widely regarded as one of the least toxic options for hair dyeing. Derived from the leaves of the Lawsonia inermis plant, henna has been used for centuries as a natural dye [1]. Unlike many conventional hair dyes, henna is free from harsh chemicals like ammonia, peroxide, parabens, and synthetic fragrances [2]. It colors hair by coating each strand with its natural pigment, which can range from red to orange tones, depending on the original hair color and the quality of the henna. This method not only reduces the risk of damage to the hair shaft but also minimizes potential scalp irritation. While henna is generally considered safe for most people, a patch test is still recommended to rule out any allergic reactions. Its natural conditioning properties can also leave hair feeling thicker and more lustrous.

Are there any concerns with using natural hair dyes that contain henna?

Despite being natural, these dyes can still cause allergic reactions in some individuals. For instance, henna can be mixed with compounds like p-phenylenediamine (PPD) to alter its color, which can cause severe allergic reactions. It's always advisable to perform a patch test before full application [3]

 

References

1) Bhuiyan, M. A. R., Islam, A., Ali, A., & Islam, M. N. (2017). Color and chemical constitution of natural dye henna (Lawsonia inermis L) and its application in the coloration of textiles. Journal of Cleaner Production. Retrieved November 21, 2023, from https://doi.org/10.1016/j.jclepro.2017.08.142 

2) Kirkland, D., & Marzin, D. (2003). An assessment of the genotoxicity of 2-hydroxy-1,4-naphthoquinone, the natural dye ingredient of Henna. Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 539(1-2), 91–97. Retrieved November 21, 2023, from https://doi.org/10.1016/s1383-5718(03)00077-9

3) Al-Suwaidi, A., & Ahmed, H. (2010). Determination of para-Phenylenediamine (PPD) in Henna in the United Arab Emirates. International Journal of Environmental Research and Public Health, 7(4), 1681–1693. Retrieved November 21, 2023, from https://doi.org/10.3390/ijerph7041681.

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