This may suggest you feel unclean, or that you feel others see you as unattractive or unlikable. There is a likelihood that you feel shy about social contacts and expressing yourself, or that you feel there are blemishes on your character as others see you.
Useful Questions and Hints:
Do you have acne – if so what comments does this dream make about it?
Can you shift the dream images in any way to arrive at a more satisfying feeling?
What does this suggest about the image you have of yourself?
What ever you feel in the dream you can change it. Most dreams are the result of unconscious habits, you can become a different person by using Dream Visualisation.
Use Dream Processing to find more insight.