Here's my small collection lol, I use all of them at the same time every day cause I have very little access to sunlight and theyre used to treat my sleep disorder. Behind the smaller lamps is also a pair of light therapy glasses

Some things worth knowing: they can trigger manic episodes in folks with bipolar disorder, and won't produce vitamin d like the sun, as they shouldn't emit any UV, so if you have a vitamin D deficiency you'll still need a supplement or sunlight. And you need to sit within the correct distance from them for them to work properly, it will vary depending on the lamp and a decent lamp should tell you that distance in the user guide/manual

Try not to use them too late in the day, as that can screw with your sleep- if you dont have my sleep disorder you should be okay to just go by when the sun is up or has set, as a guideline for it being too late

Carex makes the nicest ones I've used by far (thats what the big one in my pic is, though an older model, they have nicer ones out now). There are some other brands that make less expensive ones, but they may not be as bright or have as ideal of a light spectrum. If you have any questions feel free to ask, I'm not an expert but my condition has necessitated learning a lot about these things