When it comes to choosing the right paint finish for a bathroom, it is important to consider the moisture and humidity levels in the space. According to experts, the best paint finishes for bathrooms are those designed for use in steamy rooms, such as eggshell, satin, semi-gloss, or glossy finishes. These finishes are more resistant to moisture, mold, and mildew than flat or matte finishes, which are porous and can trap moisture, leading to mold growth and water damage. Consumer Reports recommends using either satin or semi-gloss for bathroom walls, ceiling, and trim, as they are durable, easy to clean, and less likely to trap moisture. Satin is more durable and shinier than eggshell, while semi-gloss is even tougher and a cinch to clean. If the bathroom has a proper exhaust fan and mold is not a primary concern, a satin, high-gloss, or semi-gloss finish can be used. Before painting, it is important to clean the bathroom walls first and remove any existing mildew with a water and bleach solution.