I had the same problem at first too...but then I realized I was pouring my brew like I would a BMC at a party- the standard 45 degree angle thing almost the whole way so i get no head at all. I caught myself and changed up my pour to a half tilt then straight pour method.
You probably were already pouring like a person with common sense, but I figure I'm not the only one out there who was this dumb...or am I? Probably.
Additionally, though specialty grains did a lot for my head retention as well...once I stopped pouring as if I needed every drop in the glass did a lot as well.
Bottled: EdWort's Apfelwine, Illegitimator Doppelbock, White Ale
Contemplating: Hefeweizen, chocolate strawberry porter, chocolate whiskey stout