I have these pains which I need to treat by rubbing a solution onto my scalp. The doctor said that no water shoudk touch it whilst I leave it on for 10 hours. However, i know that Salah will occur in between for which i will need to do wudhu. Am I allowed to just pass water over my head or does the water have to wet every hair etc. like normal wudhu?
Please could you answer this before fajr.