He might be just in a puppy stage. Pepper went through it, around 4 months of age and it lasted for several months... From licking all over your face he went to pulling on hair, biting nose and ears - hard
. I stopped playing with him while laying on the floor. Well, he outgrew it and now, when he can get hold of your face or head, he licks away. You can use maybe a water squirt when he does it?