Butter London Knackered.
First of all, while this polish was really easy to apply, it's very sheer. I used three coats, although a fourth would probably have been better. I imagine two coats would do if you wore it over an opaque base. Still, it applied smoothly and dried really quickly. The scattered holo particles are really fine, so it doesn't feel gritty like some glitter polishes.
This is generally how it looks most of the time: pinkish/purple sheen.
Tilt it at the right angle and you get a pretty green duochrome!
I adore this polish. I can live with its sheerness because it's so beautiful and easy to apply. The duochrome in it is a nice touch, as is the holo glitter. You really have to see this baby in the sun to appreciate its true beauty.