Statutory Warning : Some Onions were hurt during the process and it was intentional. You might want to cry if you’re emotional but good thing is this onion doesn’t activate your tear-falls but does reduce hair fall. 
I had always heard that Onions were good for hair but never really thought of how to use them. To begin with, the smell isn’t a pleasant one and God knows how to even apply them. So yes, the process is alarming enough and to be honest who would have the time to cut onions and cry along with? Not me!!! I would never do that kind of hard work. I am way too lazy. ( Sadly, that’s not a good thing to boast about). Sighh!!!
PS : Do you face similar problems too when you change places? Like your hair has to get accustomed to the new water again. Trust me when I say, a lot depends on the type of water that we use and I cannot stress more on this factor.