The little bugger must be rolling in it. LOL Oh the days of Puppies.
You could get his own wash rag, fill the bathroom sink with water and puppy shampoo, dip the washrag in, and softly wash the little guys face.
Then get a dry towel and softly dry him.
Theeeen give him hugs and kisses.
You are doing very well and remember... puppy stage doesn't last too long, but I do know how hard it is