Bentleys hair has a slight wave to it, and has a tendancy to get knotted and matted if I don't bathe him every week. I use tearless baby shampoo on his face, and use a soft bristle tooth brush to wash his face and eye goobies- it works great! For the rest of his body I use Johnson's Buddies no more tangles easy comb shampoo, and once I rinse really well, I spray on a detangler/leave in conditioner and brush him out while wet. Sometime's I even will blow dry him, but he's not too partial to it!
For Nina, her hair is totally straight, finer and less "fluffy" I don't need the leave in conditioner spray, I just let her air dry and then brush her out.
Oh and brushes, I use a slicker brush for getting out the knots and use a soft, ex. natural boar bristle brush for daily use, and putting in top knots.