Here are a few environmentally-friendly solutions to remove soap scum in the shower or tub.
1. Bye-bye, buildup. Put vinegar in the microwave for 30 seconds. Pour into a spray bottle and mist the shower. Let sit a few minutes, then rub away.
2. Re-use dryer sheets. Rubbing shower doors and tiles with fabric softener sheets after bathing will prevent soap scum.
3. Lemony fresh. Apply lemon oil with a cloth to tiles to remove film and protect against future stains.
4. Squeaky clean. Combine a cup of baking soda and water to make a paste. Coat your tiles, leave 15 minutes, rinse. Want to get rid of soap scum from now on? Just switch from bar soap, which contains soap-scum-forming talc, to liquid shower gel.