If this is applied externally, it has no effect on your fasting.

I have a hair loss problem for which the docter gave me a tonic medicine to be applied every night and it has alcohol content along with other natural ingredients. The percentage of alcohol is un-known. I apply it in night when I am not fasting, and wash it in the day while I am fasting. Is this ok?

Fasting | July 8, 2014 5:38 pm
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I have an exam from 1:30pm to 9pm. The exam center will allow me to drink water to break my fast but I’m worried whether I will be mentally capable of giving an exam while fasting for so long, about 18 hrs as I will only be able to eat after 9pm. Can I miss my fast for that day?
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Sheikh if i have sever headache at night and after taking medicine, i make a niyyah that if this headache gets reduced by suhoor i will fast tomorrow inshallah .is this permissable.