Is using Cornflour to spruce up my oily hair bad for my hair?

After as little as a day or two, my hair becomes so oily that I need to wash it. This regular hair-washing is neither good for the natural oils on my skin, nor for a busy schedule.

I recently discovered “Dry Shampoo”, a can of spray that I used whenever my hair was oily… until I realised it contained Butane (meaning it kills the normal microbiota on my head as well – i.e. the “good” bacteria). No wonder my scalp was so itchy all the time!

I heard from people that plain regular “cornflour” does just as good a job of soaking up the excess oiliness of my hair, which makes sense since I use it to thicken broths when I’m cooking.

Besides sprinkling too much in my hair and looking like I have dandruff, are there any possible side effects to using a bit of cornflour each morning in my hair?