as Bill, stated.. No tight fitting hats!
also, with in the first 4 days..
Sleeping.. if you don't keep your head up right, you may run a chance, small be it, of increasing blood pressure to the scalp, causing popping. Though, very, very rare.
Also, same for lifting. Don't pick anything up the causes muscle tightening.
This should be applied torward the first few weeks for the donor scar as well.
No direct stream of water on your head when showering.
No hair drying for the first few weeks.
No scratching or touching.. obviously!
No hair treating or styling.. Hair gel, shampoo, etc...
Basically look at it as doing absolutley nothing, PERIOD, for those first few days.
and yes, "definately ask your doc for some other "post op" tips!'