Mineral deposits, not only bacteria
When water evaporates from a tap or shower head it leaves the dissolved minerals on the surface, which build up gradually into a hard white layer. The hotter the weather and the more often the fitting is used, the faster it forms, especially on surfaces that are not dried after use.
Limescale can also mix with soap and shampoo residue and form a sticky film that a dry wipe will not remove.
Where it appears
- The holes of the shower head
- The aerator at the end of the tap
- The tap base and surround
- Shower glass and basin corners
- Sometimes the outside of the heater
