10-20 minutes is the recommended treatment time for a session of red light therapy.

10-20 minutes is the recommended treatment time for a session of red light therapy.
Traditional Red vs. Nutrilights Blackline
The great antidepressant effect of light
Red light therapy can reduce the number of fat cells
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Can red light therapy improve my exercise results?
How do I know if red light therapy is working? What should I feel for?