Dye

A dye is a coloured substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they colour. The dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber.Both dyes and pigments are colored, because they absorb only some wavelengths of visible light.

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Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 3 years ago

Bismihi ta'ala

It is our Shi'i culture that in the two months of Muharram and Safar we do not engage in celebration or any form of public happiness, or adorning ourselves with zeenah, makeup, and so on. 

If one was to dye their hair (as zeenah) in desecrating the sanctity of Ahlul Bayt (a.s.), then it would certainly be haram. 

However, for the sake of getting rid of white hair, and not for zeenah, it would not be considered haram, but best not to, especially if the common custom ('urf) sees it as something wrong. As the hadith expresses, we show happiness when Ahlul Bayt are happy, and we show grief when Ahlul Bayt are sad. 

And Allah knows best.

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Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 6 years ago

Yes it is not only allowed but even recommended (Mustahab) to dye the gray beard and gray hair with any color which suits you. Some non Shia Shaikhs claim that black color should not be used. This claim is not authentic and has no evidence. According to authentic Hadeeths, using any color which suits you is allowed.

Wassalam.