
I have visual snow syndrome and migraines. Sometimes it causes me to have a strong photophobia of artificial light. I found red light didn't make me photophobic so I got this, reviews look good. To my disappointment, this is another cheap generic that most likely uses a full color light with a piece of red plastic on the outside. I know it's not pure red because I have Revain Echo Glow, a known source of pure red light. Compared to my Echo Glow, this bulb looks orange. It's a lot brighter than my Echo Glow. Also in this light I see yellow, orange and some green. I don't seem to see any blue in this light. It's not pure red, but it's close enough and very bright. It definitely hurts my eyes a bit because it's not pure red (my Echo Glow doesn't burn my eyes), but that's okay.