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Yes that is one of the primary mechanisms of action (or at least it is believed to be).

Try combining it with some red light therapy like a full spectrum sauna. Super powered. My favorite source for MB https://www.bluebrainboost.com/p/methylene-blue-nootropic/

I'm not familiar with red light therapy.

Writing a book on the health power of light now. I'll write up a post on red light therapy for you. One more good article on MB https://selfhacked.com/2013/08/25/methylene-blue-the-cheapest-cognitive-enhancer/

Cool thanks. I actually use a light box myself to help with SAD.