We have been using photo dynamic therapies in our clinic for over a decade. This is a well-researched device that we are having our patients use in the clinic, but is is easy and safely used a home as well. At check out enter our exclusive 10% discount code wholebodymed. For improved memory, concentration, healing from brain injuries, and reversing dementia – I highly recommend this device as an in-home adjunctive therapy to compliment our neurotherapies at our clinic- Dr. Adam Breiner