What is the ruling on using organic keratin protein topical fibers to temporarily thicken hair for someone suffering from hereditary baldness, knowing that it does not prevent water from reaching the scalp and that the user will disclose this?
There is no objection to using products that thicken hair, as long as they are not impure (najis) or forbidden (haram), such as those containing pig protein or from an animal that died naturally (maytah).
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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