Go to the same area as your cell and look for a button called Vion he'll help you gain hypnosis experience. Alex will sell hypnovisors once you reach a point in his quest line.
Thanks for the info - I did go to him a lot and grinded out some hypnosis experience, just didn't know where to get hypnowizors. Kinda obvious in hindsight to go to the engineer for a gadget.
