After hypnotherapy, whether you remember everything depends on several factors, including the purpose of the session, the techniques used by the therapist, and your own responsiveness to hypnosis.
What usually happens with memory in hypnotherapy:
Many people do remember the session: Most clients retain a clear memory of what was discussed during hypnotherapy.
Some partial or altered recall: Sometimes memories can be fuzzy or partial, especially if deep trance or age regression techniques are used.
Amnesia can be induced: In some cases, therapists intentionally suggest forgetting certain parts of the session (post-hypnotic amnesia), but this is not common unless specifically part of the treatment.
Individual differences: People vary in how much they remember — some recall everything vividly, others less so.
Summary:
You will likely remember most or all of your hypnotherapy session, but this is not guaranteed. If remembering is important to you, mention it to your therapist beforehand.