be careful, my sister didn't remember her childhood (she was adopted out) & went to get hypnotised. This was say, 15yrs ago, she recalled things from her past that have sent her crazy, she's in & out of mental institutions, lost her children & is suicidal, has shock treatment & is suppressed by numerous drugs. She was such a bright, happy, person. It's devastating to see the change in her. She was not meant to remember.
You should never hypnotize someone. People dont realize the dangers involved. Other that just speech there are other things that affect someone under hypnosis. Such as noises and sounds. These too are recorded in the unconscious and do create an effect when the person awakes.