get rid of my eczema

So I read in the newspaper that a diluted bath in bleach can help relieve eczema. Like half a cup for a full bathtub and soak in it. I wish I could do that, but my eczema is on my scalp, lol. And with brown hair, I’d prefer not to be blonde. So I’ll stick with the tar shampoo and try not to pick at it.

Well I had eczema really bad on my right ankle about 7 years ago. And then the eczema appeared on my scalp/near my hairline in the back, where it looked like bad dandruff. So my mom took me to the doctor and he said both of it was eczema. So then I put Cortizone on my ankle every time it was dry and then put a sock over it (I was hiding it anyways).
Well I got rid of the eczema on my ankle… YAH!!
But the eczema on my scalp won’t go away! I almost got rid of it this summer, I had gotten rid of most of it. But when I got back to the dorm I stay at during school it got worse. And I can’t get rid of it! And its really, really itchy.
To get rid of it this summer I mixed head and shoulders with the cortizone and left it in my hair while I shaved my legs so that it could set. But now that isn’t working!
And the worst thing is that I have naturally really oily skin and hair, so moisturizers don’t help, since I have natural oils.
HELP!!!! I need all the help I can get!