Can Women Dye Their Hair?

What is forbidden is to dyeing the hair black or dyeing it to imitate the kafir (non muslims). There is nothing wrong with dyeing your hair brown even if you do not use henna. What is not allowed is to dye one's hair black, because of the hadeeth narrated from the Prophet (peace and blessings of Allaah be upon him)
{islamqa, fatwa no. 1008}

Jaabir ibn ‘Abdullah reported that Abu Quhaafah was brought on the day of the conquest of Makkah, and his head and beard were white like "thaghaamah" (a plant whose flowers and fruit are white). The Messenger of Allah (Peace & Blessings of Allah be upon Him) said:

"Change this with something, but avoid black."
(Reported by Muslim, no. 3962)

Ibn ‘Abbas (may Allah be pleased with him) said:

"The Messenger of Allah (Peace & Blessings of Allah be upon Him) said: ‘At the end of time there will be people who will dye their hair black like the crops of pigeons. They will never even smell the fragrance of Paradise."
(reported by Imam Ahmad, see also Saheeh al-Jaami‘, no. 8153)

It was also reported from the Prophet (Peace & Blessings of Allah be upon Him) that one should change grey hair, using any colour except black. Abu Dharr reported that the Prophet (Peace & Blessings of Allah be upon Him) said:

"The best things with which to change grey hair are henna and ‘katam’ (a plant similar to henna which is used as a dye)."
(Reported by al-Tirmidhi, no. 1675; he said: This is a saheeh hasan hadith)

Dyeing hair with pure black dye is haram because the Prophet (Peace & Blessings of Allah be upon Him) said: "Avoid black," and because of the threat of punishment reported with regard to this matter. This ruling applies to both men and women.

But if the black dye is mixed with another colour, so that it is no longer black, there is nothing wrong with it.


SOURCE:
{islamqa, fatwa no. 476}



There is no report of the Prophet (peace and blessings of Allaah be upon him) forbidding dyeing the hair any colour except black. There is nothing wrong with a woman dyeing her hair any other colour – brown or blond or any other, so long as by doing so she is not imitating kaafir women or immoral women.

Shaykh Muhammad ibn ‘Uthaymeen (may Allaah have mercy on him) was asked about the ruling on a woman dyeing her hair any colour other than black, such as brown or blond?

He replied:

The basic principle is that this is permissible, so long as it does not lead to resembling kaafir women or immoral women, because that is haraam.


SOURCE:
{islamqa, fatwa no. 111860}