It is very common to dream about all kinds of faces. Strange faces and familiar faces alike are frequent images in our dreams. Interpret your dream by considering the face and the general content of the dream.
A stranger’s face could represent different parts of your personality or psyche. You think that you are seeing a stranger but in actuality you are seeing a different part of yourself. Jung said that the stranger is a part of you that comes from the unconscious.
A comic face may indicate that you have a conscious or unconscious need to mock or snub the conventional. Featureless faces suggest that you may feel unnoticed and unappreciated. On the other hand, some believe that the blank or unclear face represents a teacher. That is someone who is there to show and teach you a lesson but you are unprepared for it and the face is blank. Smiling faces are representative of happy thoughts and feelings and possibly anticipation of a joyful event in the near future. Always remember the compensatory nature of dreams and their ability to point to the opposite of what you experience in daily life.... The Bedside Dream Dictionary
Dreaming of a stranger’s face could represent different parts of your personality; a comic face may indicate that you have a need to mock convention. Featureless faces suggest that you may feel unnoticed and unappreciated. Also, some believe that a blank or unclear face represents a teacher. Smiling faces are representative of happy thoughts and feelings, and possibly anticipation of a joyful event in the near future.
To dream of seeing your own face in a mirror denotes some type of trouble ahead for you.
A dream of weird, leering faces is warning you of potential danger to your person, or misfortune will dog your steps.... Tryskelion Dream Interpretation
People you know, or with whom you interact regularly. Different facets of the self.
Reflective of prevalent moods and emotions.
A smiling face indicates joy, for example, while a scowling one reveals worries or anger.
Two faces or heads on one body indicates either a split personality or betrayal (e.g., being “two faced”). Alternatively, if one face is male and the other female, this represents an integrated balance between the sexes (see Hermaphrodite).... The Language of Dreams