Photobiomodulation (laser therapy) is the therapeutic application of light to produce energy in cells. Brain laser therapy is a non-invasive treatment used as part of a broader treatment plan.
Laser therapy works by delivering specific wavelengths of light to targeted tissues in the body. In practice, it may look like this:

light interacts with photosensitive cells in your retinas, which convert the light energy into electrical signals that are transmitted to the visual processing areas of your brain

when you’re in the sunshine, ultraviolet B light strikes your skin causing a reaction that converts a form of cholesterol to vitamin D3, which helps your body absorb calcium
Laser therapy has been used to relieve some symptoms of many different health difficulties.
[Photobiomodulation therapy] has been shown to be effective in the treatment of traumatic brain injury and neurodegenerative diseases…In the psychological realm, it has displayed effects on learning and memory, attention, executive functions, and several psychiatric disorders…Therefore, PBM can be considered an innovative and potential treatment for a wide range of neurological, psychological, and psychiatric disorders…
Neuroscience & Biobehavioral Reviews,
Volume 119, December 2020, Pages 242-254
Laser therapy is a gentle, non-invasive procedure. You may experience sensations of warmth or mild tingling during the treatment. Some patients find it quite relaxing!
You can usually resume your normal daily activities as soon as you leave the clinic.
Laser therapy outcomes are influenced by various factors, including individual health status and other treatments. Outcomes vary among individuals and research is ongoing.
While promising results have been reported in studies, laser therapy is typically considered as one part of a broader treatment plan that includes conventional care.