Bath Enamel Paint

We renovated the emulsion, some of whom I think has an acrylic base. We rinse the brushes and rollers, etc. in the bath. It is a very old enamel bath with lots of fine surface scratches and paint-stained really badly. I have visitors coming and it's horrible! How do I get? Scrubbing does not simply.

go easy with a single edged razor blade and pick up the excess and then use something like scrub it with Comet.

obtain soft scrub and comet hot water hot water should help loosen the paint and scrub should do the rest.
and to prevent it from happening again wash the paint on the sides with a hose.

Use steel wool pads and hot water.