I think I'm addicted to holographic nail polish! This is by far the ULTIMATE holo polish that I own. The rainbow quality is seriously outrageous! Holographic is a silver holo polish by Gosh, a brand that comes from Denmark. I was lucky enough to acquire this beauty in a swap.
Now for the downside. It is an absolute b*tch to apply! This is the most dense holo varnish I've tried but I hear Nfu-Oh's are just as temperamental. You know what happens when you have a dry-erase marker on a whiteboard and you color over a spot that's already colored, the color just comes off right? Well that's kind of how this applies. Going over previously painted spots while the polish is wet equals bald patches and gloopy polish. It took me about 4 coats to get it to look like this, just to cover the bald patches! :P Is it worth it?? Yes.
I've heard of an Aqua Base coat that Gosh and Nfu-Oh have that makes applying super dense holos like this way easier, in case you're interested. I know I'll have to have patience when I apply this baby again, but hot DAMN it is sexy!