Answer: Everyday! Position the lamp in a “10:00” or “2:00” position relative to where you’ll be about 18”/45cm to 24”/60cm from your face. Initially, start with the lowest light intensity. Experiment with the light intensity and session duration until you find a regimen that’s comfortable and effective for you. For most people, that’s 15 to 60 minutes a day, but your needs may be different. If you start to feel edgy – something akin to a “caffeine buzz” – you’ll want to shorten your session and/or lessen the light intensity.