I need some quick help!

Even though I rinse my blade with hot water after each shave and dry it immediately with a piece of toilet paper then cover it in camellia oil, the blade is developing some microscopic lines... some darker than others. I'm not sure if its from the water or from the oil but I'm want to say the oil because it looks like this stuff dries up and leaves spots.

How can I get rid of them before anything else happens to really damage the blade and how can I change the way I'm preserving it? I tried to get them out with rubbing alcohol and a q-tip but that didn't work at all.