This is not fingernail polish thick. It is ready for use in a spray gun straight from the bottle. If you would like this product to be thick as fingernail polish then leave the cap off and stir every half hour until desired thickness.
We use this same paint on our tow hook and headlamp washing systems covers and it matches up beautifully.
If you are not familiar with how to apply touch up paint there are many videos on the internet to guide you through the process so you may get the best possible results.