This is the red light device I use for drug free, nasal allergy symptom relief (no affiliation).
You can find it on Amazon, and it only costs around US$20.
I use it for 5 minutes nightly before bed.
My conventional allergist was amazed at how well this controls inflammation.
While not a root cause solution,
its a great alternative to steroids and anti-histamines until the immune system is tamed.
The science of light (and all the mistakes weve been making with it) is going to be exploding in the next 10-20 years...
Light and EMFs are going to be the "cigarettes" of our generation.
This is not a laser (even though its marketed as such).
No comparison to the vie light-only for allergy relief; doubt it impacts brain function.
But great deal for the price!