The best part is that it really doesn't take much for the effect to be visible. Many other holographic polishes look completely dull in anything but direct sunlight. This one is best in bright sunlight of course, but I even see quite a bit of the rainbow shift indoors. The only time I've seen it completely flat so far is in the shade outside.
I wanted to do a little nail art on this, but I decided to keep it simple so as not to overshadow the gorgeous holo-ness. And of course I had to go a little crazy with the pictures. Because holo.