At the moment I am buying more from Rainbow Connection, some polishes from the Polish Pick Up section and then others from the standard shop. Another place I have been using more recently is Nail Artisan.
This post has been some time in the writing, because I live in Northern England and this polish is photo chromatic actually finding some sunlight to activate it took a few months!
[Indoors, No Sunlight]
[Outdoors, Direct Sunlight]
Colour | Blue / Purple
Finish | Flakie / Photochromatic Opacity | Three Coats Shown Brush Type | Flat and Wide How Much | 10ml