What is the ruling on using hair dye or coloring?

The questioner : Hello. Yes.

The Shaykh : And upon you be peace.

The questioner : That is possible.

The Shaykh : The sister asking says she is asking about the ruling on hair dye, the dye for hair, for a woman, O Shaykh?

The questioner : Ask her what the dye is?

The Shaykh : What is the dye, the Shaykh says?

The questioner : By Allah, it is the dye.

The Shaykh : And hair coloring, is it?

The questioner : Like hair coloring.

The Shaykh : It is close to hair coloring, O Shaykh, where some sisters say that it prevents water from reaching the roots, the roots of the head, O Shaykh? As for coloring, if it is with black to cover gray hair, then it is forbidden, because the Prophet (peace and blessings be upon him) commanded to avoid black in coloring gray hair, and there is a severe warning in the hadith for whoever does it. And if it is with another color, there is no harm in it. But if a woman has gray hair and she mixes henna with indigo, there is no harm in it, because it makes the hair brown. Yes.