This post has been edited and the name of the pigment has been removed.
I've been sitting on this post for four months. I feel like a mad scientist! It's alive! Lots of text in this post but I think it is worth it.
I used a pigment powder for this franken. I was given a tiny little bit from a friend who used to own a custom car painting place. It contains magnesium fluoride and aluminum and I don't suggest buying a ton of it and going to town with it. I didn't use it for industrial purposes so felt safe handling it but I did wear gloves and made sure not to inhale it. Also, magnesium fluoride and aluminum are ingredients that you will find in older polishes such as the Sally Hansen Prism line. I was pretty confident because of that fact that it would not explode when mixed with nail polish. It can also be mixed with water based paint so that made me feel even better. No explosions and no body parts have fallen off but as always please be careful and use common sense when using unknown elements.
I highly suggest putting it in a color polish. I added some to clear to make a silvery holo topcoat but it separated after sitting and needed a really, really good shake. Another suggestion is that you add it to polish and not the other way around. It seems to mix better that way. It's a very fine powder so keep that in mind if you plan on playing with it.
On to the good stuff!
I've been letting this sit for about four months because I wanted to see if it would be okay or if it would fail. Plus I kind of forgot about it - opps! It's really okay! Woo and a Hoo! I made a linear holo! How exciting is that?!
I named this My City Bus since I travel by public transportation and not by jet. Ha! Take that OPI! This is one coat over a black creme.
1 bottle of China Glaze Liquid Leather with a bit taken out for room
2 tiny little pinches/scoops of pigment (I used a straw cut to make a shovel scoop)
On the nail.
Here is the silver holo topcoat over a blue creme. It's a bit patchy from sitting and becoming separated. Still pretty but the pigment seems to work better being added to a denser color base like black.