My old roommate had a full spectrum light he kept in his desk. We don't get much sun, so it was to help compensate (for stuff like mental health and such)
Yeah I've only got one a few weeks ago and I'm obsessed with it now.
I live in England so I should have realized that the air is humid (It gets hot here, I swear), but it never really occurred to me before that moisture was the same as humidity.
I could practically live off the water it extracts from the air. Have no idea if that's good or bad for me, but it feels better
They are excellent for seasonal affective disorder. Basically, humans technically have a mild form of hibernation. Our modern lifestyle doesn't allow for that however. When you don't get enough sunlight, our body assumes it's time to bed down. This is experienced as an extended bout of apathy and tiredness, leading to depression.
A sunlamp has enough light, of the right spectrum, to help reset this system to summer mode.
Can google around about blue light triggering melatonin suppression and the effect of chronically elevated melatonin and circadian rhythms if you want to learn more too.
The TLDR is ideally bright white or blue light at consistent time first thing in the morning to help your body regulate circadian rhythms.