What type of paint do you use in bathroom?
Considering this, do I need special paint for bathroom?
Bathroom paint tends to be at the high end of interior paints, excluding overpriced designer paints. On the other hand, if you don't need a low-sheen paint in your bathroom, you should be happy with a good-quality satin, semi-gloss, or high-gloss standard paint with antimicrobial additives and a highly washable finish.
Keeping this in consideration, is there a waterproof paint for bathrooms?
Sherwin Williams, Benjamin Moore, and other major paint manufacturers have recently introduced bathroom-specific paints featuring antimicrobial additives that prevent the formation of mold and mildew — in this respect, bathroom paint is indeed waterproof.
The unfortunate answer is that it probably won't work great. Bathrooms tend to be moist places, and flat or matte paint will begin to grow mold or mildew much faster than other paint sheens. Also, it doesn't resist stains very well, and it is somewhat hard to clean.