Clorox bleach. You can put it on with a small paint brush, "my preference" or spray it on. Just make sure there is ventilation in the room and get out fast because it is not good to inhale it. Wearing a mask is a good idea. Just shut the door for a while then go back and rinse with cold water. It's the only thing I have found that really works well.Clorox has come up with a new type that doesn't smell as strong but I haven't tried it yet. Opening a window and the shower curtain after you shower will help slow the mold growth. If you don't have a window then turn on your exhaust fan and let it run for about 45 minutes after showering.
There can be a number of solutions for black mold. First of all you can make use of natural ingredients like Vinegar and spray it in the places that has mild. Then there are sprays for mold killing such as Comet
For pink stains in the shower stall use hydrogen peroxide. I used it with an old tooth brush and the stain disappeared almost immediately.
We can use some natural ways for the removal procedure. Mold Removal Tips
We can also use some natural ways for mold removal.