I just took a class in alternative materials and did a lot of work
with resin. Easy cast casts very soft. It doesn’t take a good polish
like acrylic plastics do. White rouge will give you a semi decent
finish. If you want a better polish you can paint a fine even coat of
the resin over your piece. Put it in a vacuum to degas it and let it
set. Its very hard to get a perfect clear coat so you might want to
stick to white rouge. You can’t make it scratch proof, its to soft a
resin.
Hope that helps.
Vin