Whether a bathroom faucet will rust depends on its material and maintenance. Here is some specific information about bathroom faucets that rust:

1. Material:

Stainless steel: High-quality stainless steel faucets have excellent corrosion resistance and usually do not rust. Faucets made of this material can maintain good appearance and function for a long time, even in humid bathroom environments.

Brass: Chrome-plated brass faucets also have good corrosion resistance and are not easy to rust. However, if the plating is damaged, the brass inside may corrode.

Zinc alloy: Cheaper faucets may be made of zinc alloy. Although the surface is usually protected by a plating, once the plating is worn or damaged, the underlying material is prone to rust.

2. Maintenance:

Regular cleaning: Regularly cleaning the surface of the faucet can prevent water stains and soap residue, reducing the possibility of rust. Use a soft cloth and mild detergent, and avoid using abrasive cleaning tools.

Prevent scratches: Avoid scratching the surface of the faucet with hard objects to protect the electroplating from damage, thereby preventing rust.

Timely repair: If the electroplating is found to be damaged or scratched, the faucet should be repaired or replaced in time to prevent further corrosion.
To sum up, high-quality stainless steel or chrome-plated brass bathroom faucets generally will not rust under normal use and proper maintenance. Inferior faucet materials, such as zinc alloy, may rust after long-term use. Therefore, choosing high-quality faucets and taking good care of them can effectively prevent rust.