[Broken_Hippo]

"Vuity is by no means a cure-all, and the maker does caution against using the drops when driving at night or performing activities in low-light conditions"

I'm in Norway. My days - between sunrise and sunset - are less than 5 hours long right now, and the light produces long shadows and tinted clouds throughout the day. I could not use this product during winter: It lasting between 6 and 10 hours means my daylight is gone before it wears off.

[abrowne]

If it ends up working really well, presumably they can reformulate it with a lower dose or one that leaves your body faster.