It's a sheer black nail polish base filled with gold glitter. It doesn't look much in the bottle but after applying two coats to the nails it takes on a sort of 3D effect. The gold glitter in the first layer gets muted by the black polish so there becomes two different shades of gold glitter - it's hard to explain (and photograph!) but hopefully you get the idea. For £2.99 I think it's a complete bargain and a perfect polish for the festive season.