If vaseline grosses you out, go to a pharmacy and buy this product called Blister Block (by Band-Aid). Its a stick that you rub onto your skin and it prevents your shoes from chafing. I had an interview once and my shoes were killing me so i ran into a pharmacy and bought this and some band-aids and i didnt even need the band-aids cause it worked wonders! they automatically felt better, and its not greasy like vaseline. Im posting a url so you can see exactly what im talking about: