i've had my dreads in for nine days now, and haven't washed them yet (i was told by a few different people to leave it as long as possible before washing for the first time). yet, my hair doesn't really appear oily at all! this is excellent. i always hated that i had to wash my hair every day, because it seemed like such a chore and a waste of shampoo, water (extra showering time), etc. now, once my dreads are settled in, i'll only be washing them maybe once or twice a week!
this just keeps getting better and better :)