Light therapy has been shown to improve skin in various ways.
But are they doing anything the sun doesn't do (besides not damage with UV)? Would I get the same benefits by laying outside on a sunny day with sunscreen?
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Yes. Light therapy was created for people in conditions where they lacked natural light.
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Depression is reduced by natural sunlight versus light therapy.
Mechanism is unclear
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I wonder this too
I always find found my skin looked better when I was spending time outside in the sun (with sunscreen) , but lots of confounding factors
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no they are not necessarily the same, its different wavelengths that dictate what it will do to your body
the term is photobiomodulation
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Natural light is far superior. Entrainment is best activated by sunlight. This could explain why people are generally happier and more pleasant on sunny days.