If you dreamed about someone else's hair turning gray: The increase in your responsibilities may make you feel more serious, you may have worries about your past experiences. To see someone else's hair turn gray in your dream refers to people who have troubles, to seek solutions, to use their minds, to show their talents and to have a happy and peaceful life. To be surprised that someone else's hair turns gray in a dream means that you are tired of being judgmental and putting people under suspicion without knowing what they are going through.