Re: Hair Extensions - Halal or Haram?
Here u go:
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Can women use hair dyes? Does it affect the validity of their wudu and ghusl?**
Answered by Shaykh Faraz Rabbani
Question:**
Can a women dye her hair with the hair dye bought in shops that contains chemicals or will the wudu be invalid because the hair is coated with chemicals?
**
Answer:
Walaikum assalam,
1. It is permitted for women to use such a hair dye, with the conditions mentioned in the attached answer.
**2. It will not affect the validity of her ablutions (wudu) or purificatory bath (ghusl), because the coating is not considered a perceptible barrier.
**
And Allah alone gives success.
Wassalam,
Faraz Rabbani
Source: http://qa.sunnipath.com/issue_view.asp?ID=110
Whilst other colours are ok pure black dye is classed as disliked by some scholars and totally haram by others so best steer clear of it if ur religious..