To dream of a hypnotist means you have the ability to hypnotize. This ability comes as a set which includes absent healing and projection.
Projection is the ability to project your mind onto others. You can use this to good and bad effect. It is very useful in marketing, sales and teaching. Be careful not to think badly of others, as your negative thoughts can have a negative effect on them. Whether you believe in karma or not you will bring it on yourself for doing this.
Hypnosis is achieved by the practitioner projecting their mind onto their subject. This is regardless of other tools the hypnotist may use to distract their subject. It is their mental projection onto the mind of the subject that makes it work.
