If I was to offer something like this I think I'd get it done first. I've seen pics from a local salon that offer it and the wording make it sound great but when I saw the pics I was shocked. I don't think I could handle that kind of look after the treatment. Maybe I could on my body if it was hidden, but not my face.
Same as above, not sure if my comments are helpful but thought I'd throw my 2 pence in, lol,x