Cat Eye gel polish – a magnetic effect for a unique nail design Cat Eye gel polishes are magnetic gel polishes that create a distinctive 3D light effect on nails. By using a magnet, the metallic particles in the gel move and form lines, waves, or a deep glow that changes with the light. The result is a luxurious, dynamic look that gives nails depth and elegance and stands out in any light. For stylists who want to create impressive, premium designs without additional nail art.