This question is a fairly common one that comes through the call centre. Surprisingly, it involves a very simple answer using a common house hold item: Vinegar !
That pesky white substance is actually mineral deposits. To remove the mineral deposits from the shower head, pour a cup of vinegar into a plastic bag and then place the bag over the shower head fixture and leave it in place overnight. Make sure to secure the bag around the head with a rubber band, tape, or a twist tie. The next day, remove the bag and use an old toothbrush to scrub off the deposits.
That should clear it up, if your still having problems with your shower head, please call Papa 604-437-7272 and one of our certified Papa’s can surely help you !