Life’s too short to spend ages cleaning the bathroom. Bio-D's convenient, versatile Bathroom Cleaner is ultra-effective and tough on limescale and watermarks. It can be used on glass, ceramics, perspex, chrome and most non-porous surfaces: just squirt, wait (not too long) and wipe. (Note that it is not recommended for use on gold plated items.)
Used regularly, it will stop the build-up of limescale too, leaving more time to spend doing much more exciting things.