Konad Topcoat

This is why you need a topcoat:

The stamped polish has a rough texture. A topcoat will smooth that out completely.

Here is an example with and without a topcoat. Do you see the difference?

Again, the 2 nails on the left are without. The 2 on the right are with a topcoat.

Same photo but I think this one shows the difference better:
By the way, you can click on the image to see it enlarged.