How do i thicken up a runny nail polish/varnish?

I have a nail polish that i got and i found out it was runny when i got it home i put it on my nail and it was too sloppy, was just wondering how to thicken it up? or what i can put in it to make it thicker like normal nail polish? if this is needed the brand of the nail polish is Sally Hansen :) please help!!!! :)