Your face represents your personal image and external performance.
And black dots indicate some shortcomings that are unfavorable to self-feeling, or poor performance in the near future.
You dream that there are many black spots on your face, which means that you subconsciously find yourself with some negative thoughts and performances, very dissatisfied with yourself and slightly anxious.
There are generally two explanations for this dream.
( 1)
If you interpret dreams directly, your dreams may be related to "face" or external image. Are you worried about your external image?
(2)
Face is the content of external display and a necessary part of introspection. This kind of dream generally indicates that the present situation is affecting the dreamer's self-confidence and self-evaluation.
Good luck!