Fine, oily hair here too. Looks terrible now that it's also thin after so much falling out post-pg...

I wash mine twice a week, but I tie it up almost every day. If I want to wear it down I have to wash it every day. On a bad day, if I wash it in the morning it can be greasy before bed...

When I was pg, I could go almost a week without it needing a wash! I loved that!!

One of the ladies in my mothers group said you can "train" your hair to not be oily by not washing it for a month. I'm not game to try it; can't stand the idea of a month of dirty hair!