After I had a query about the effectiveness of LED lights versus laser lights, I wrote a blog post here on the Well Red website.
As noted in the article by Vladimir Heiskanen and Michael Hamblin, the use of lasers is more related to the history of laser development rather than lasers being intrinsically better than other light sources.
In summary, stick with LED lights. They are safe to use and don’t have the health concerns that come with lasers.
Thank you to note thanun on Unsplash for the evocative photo.
Red lights on the brain 