Hypnotherapy is by itself a non-regulated field.
So technically anyone can get trained in hypnotherapy and use hypnotherapy with clients to help them achieve success and improve their quality of life. This is generally referred to as Hypnotic Coaching.
But to use hypnotherapy with clients suffering from intense negative emotions or past related traumas, it is recommended that the practitioner has at least completed a Master’s in Psychology. Some training programs that focus on the application of hypnotherapy towards intense issues do have this as eligibility criteria.
One can develop the skills to use Hypnosis for therapeutic purposes by undergoing courses in Hypnotherapy. A minimum of 120 hours of training with hands-on experience is recommended for becoming a hypnotic coach. As far as a hypnotherapy course is concerned, the duration of the program must be at least 240 hours.