How do I get rid of mold in my bathroom?
Bleach water. To keep it from returning, clean at least weekly with bleach water, and you must not let steam build up--you need moving fresh air--a fan or open window.
From SF Gate:
Fill a small spray bottle with white vinegar.
Spray the affected areas -- including tile, grout, painted walls, and any porcelain or ceramic surfaces -- liberally with vinegar. Let it sit for one to two hours.
Scrub the mold and mildew away with a damp microfiber cloth. Scrub tiling grout or hard-to-reach corners and crevices with a stiff-bristle toothbrush.
Make a paste of 3 parts baking soda to 1 part water. Apply the paste to any hard-to-remove traces of mildew or mold. Spray with vinegar, and scrub with a damp microfiber cloth, scouring pad or stiff-bristle toothbrush, depending on the severity of the mold or mildew.
Rinse the affected areas with water. Repeat Step 4 if necessary.
Mold growing anywhere in your house can be dangerous and should be removed. Given the humidity in your bathroom it's an easy place for mold to grow and spread. This page is about cleaning and removing mold from your shower walls.
Bathrooms and other humid areas can begin to grow mold on the walls and ceilings. This is a page about removing mold from painted walls and ceiling.
The heat and humidity in a bathroom are the perfect environment for the growth of mold on the tiles on your walls and floor. This is a page about cleaning mold off bathroom tile.
This is a page about cleaning mold in the bathtub. Your bathtub is a place to get clean. If it gets dirty and moldy then it's impossible to use it for yourself, so it is important to clean mold out of the tub as soon as possible.