Red Light Therapy is a Very Promising Treatment for Brain Injury, Stroke, Disorders of Consciousness and Many Other Neurological Conditions

Studies show red light therapy treats the following conditions:

Photobiomodulation therapy (PBM) or Red Light Therapy for Neurological Conditions (RLT) is a type of treatment which uses light to help support brain health and performance. Red light works by stimulating cells in the brain called neurons and specifically a part of the neuron cell, an organelle called mitochondria.

A comprehensive article can be found here: 
https://occupationaltherapybrisbane.com.au/red-light-therapy-for-neurological-conditions-explained/

Home set-ups for red light therapy can be purchased at Amazon for as little as $50 up to several hundred dollars: 

Full Body: https://www.amazon.com/gp/product/B0CQ8J5F57/ref=ox_sc_act_title_1?smid=A2RTJOH66ZCLUV&psc=1

Brain Only: Hats and other devices for Red Light Therapy are widely available across Amazon and the internet. 

Red Light Therapy on Google Scholar: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C44&q=red+light+therapy+brain&btnG=

Photobiomodulation on Google Scholar: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C44&q=+Photobiomodulation+brain&btnG=

Red Light Therapy for Hypoxia on Google Scholar: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C44&q=red+light+therapy+hypoxic+brain+injury&btnG=

From Quora: https://www.quora.com/Does-brain-photobiomodulation-really-work