The light is very blue light and very bright. I hope to get thru the Winter without being on an anti-depressant. I use it 15 minutes a day but can do more or less. I think it is helping already.
I think this new technology is better than my old visor which had to be 10+ years old.
If you want one they are expensive. Mine was $279 at the Philips site. I did get a $30 off coupon at www.RetailMeNot.com and the shipping was free.
I like this MUCH better than the visor. If my hair was damp from my shower I would get hat hair.