Unusual underwear, glowing underwear

I got acquainted with new technologies a long time ago and bought luminous underwear, at first glance it is the most common and does not stand out in any way against the background of many other proposals. The whole secret of this underwear lies in special fibers or dyes. I have a variant with fibers and paint, but in principle, their glow is about the same.

When I bought this unusual luminous underwear, put it on and walked in it all day, and in the evening when I went to bed, I did not notice any glow. Again, an advertising trick and misleading buyers, I thought at that moment. Then I bought another underwear, and everything turned out differently with it - before entering the dark bedroom, I went into the bathroom and spent 10 minutes under bright lighting. And when I entered the bedroom, my linen was literally burning with lights!

It turns out that in order for the linen to work, it should be lit before undressing in a dark room, being in bright light... The linen accumulates the light of the lamp and then glows independently in the dark. Repeating the same thing with the first set, I got an amazing result - the lace shone with an unearthly cold and at the same time mysterious glow.