I have not done it. WH wanted to do it in order to "forget" about the OW and to make himself "fall in love" with me again. HA. When I described what was going on with him to the hypnotherapist my IC recommended, she said he really needed to deal with his issues - sex/love addiction/porn habit - first before she could help him. Now I think she might be able to help him. I think it's worth a shot.
She recommended for me a bunch of self guided hypnosis things from this website. They helped me deal with the anger I felt.
The thing that has helped me the most is addressing my FOO issues and facing all of the unresolved pain from my childhood.