I came across Rapid Transformational Therapy (RTT), a type of therapy created by the British psychologist and best-selling author Marisa Peer, which claims to be able to cure almost every personal "problem". Hypnosis is a key element of the therapy, with the idea that the deep cause of many issues, from acne to phobias to depression to allergies, is something in the subconscious, and the solution being its acknowledgment and liberation.
All I can find online about this (very expensive) therapy is praise after praise, mostly from self help and other light sites. I have found no scientific assessment of it. There are a few peer psychologists complaining about it, but how much this is just envy is hard to tell.
I am interested in a scientific appraisal of RTT. Is it as effective as the online presence of her seem to indicate? Is there evidence about it, perhaps comparing it to other therapies?