She has developed white hair early; can she dye the white hairs black?

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Check below answers in case you are looking for other related questions:
Praying with nail polish
Dyeing the beard with henna and katam

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Related Answers:
Using fruits and vegetables to treat skin problems
Does cutting hair on the sides of the head only come under the heading of qaza‘?
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Praying with nail polish
Dyeing the beard with henna and katam

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