4/ For grouting
Spray Coca Cola onto the grouting between tiles in your bathroom, leave it to work for several minutes and scrub with a sponge before rinsing.
5/ To remove a colour from your hair
If you would like to return to your natural colour, douse your hair in Coca Cola, leave it to work for a few minutes, rinse and then shampoo as normal.
6/ To remove limescale
Pour coca cola into the toilet bowl, leave to work for a couple of hours, scrub with a toilet brush and flush.