What is the proper name (if there is one) of the acrylic paint that they use to make 3-D acrylic nail art?

I'm not sure if its just called 3-D nail art paint, or whatever, but I want to know what its called.





And also, where might they sell it, and would it be expensive to buy?What is the proper name (if there is one) of the acrylic paint that they use to make 3-D acrylic nail art?
I think this might be what you're on about, http://cgi.ebay.co.uk/Pro-24-Colours-3D-鈥?/a>





Ebay is the only place I have seen them. I have bought them and used them and they're pretty good but not for on natural nails unless you have an hour spare to sit and let it set properly..it really does take that long before they are set hard enough not to smudge. Also, some of the colours just don't work well enough to do anything but dots with them...they won't drag into a shape etc.