(Psychological / emotional perspective)
Psychologically soap can indicate a need to clean up our act. We may feel a sense of having been contaminated by an experience and situation and our dream mind is alerting us to the fact that we need to deal with it. Because shampooing is connected with the head – which of itself represents intellect – there is a connection psychologically with needing to have clarity of thought. We may feel that our thought processes have been slowed down, or dirtied, by outside influences.