I've just burnt myself with hot oil on my left forearm. I basically slipped with sausages in a baking try and it pured down my arm in probably a 3" square. It ******ing kills and is blistering up already. I also have a tennis ball sized burn on my foot from the spillage

Because it was oil, do I have to clean it before I put cream on it, because it's too painful to clean. I only have Savlon to put on it, so is that going to do the trick, or do I need something else?