Interior doors – especially those handled on a regular basis, such as the bathroom door – require a tough and washable paint. High-gloss paint is the hardest wearing and easiest to clean, with semi-gloss paint coming in a close second. The downside to high-gloss paint is that it shows flaws more than any other paint, because of its highly reflective properties. Semi-gloss paint offers the same sturdiness as high-gloss paint, while still being easy to clean, making it the better choice of the two if the door surface has many dents and dings. If high-gloss and semi-gloss paints are the only two options you’ll consider, opt for high-gloss to protect the door trim and semi-gloss for the door itself. This gives the two areas a slightly different finish while protecting both surfaces.