Awe I really wanted the answer to this!
It depends on how much water comes out of your shower head.
Fill a bag with vinegar and tie it to the shower head. Leave it on for a couple of hours then wash. Good as new. Or get yourself a shower head with rubber nozzles which are much like the SparkPod filtered shower head on Amazon.
You cannot lose weight by taking a cold shower. A warm shower will help because it will help burn the excessive fats beneath your skin.
112lbs
it can hold as much weight as it can handle
A Command Strip can typically hold up to 7.5 pounds of weight.
Paper can hold exactly 4.5 kg
it can hold up to 2 gallons
Gorilla Super Glue can hold up to 30 pounds of weight.
The Golden Gate Bridge can hold up to 38,000 tons of weight.
90lbs
120 pounds