Bright light is known to have mood-elevating effects broadly from light and seasonal mood swings to severe depression. That's where Valkee started, with Antti Aunio asking his childhood friend Juuso Nissilä if he had any tips to improve his mood during the winter months.

'You don't need bright light in your house. You need to light up your brain - that's where your mood lives'

From this, Juuso introduced Antti to his observations about the human brain being photosensitive. Aunio went on to turn Juuso's science into Valkee's current product, the brain stimulation headset that channels bright light into the brain via ear canals.

Valkee was born to have a big mission; helping people to stay in a better mood by exposing their brain to light.