Why does a white crust keep coming back on my bathroom sink?
A persistent white crust or efflorescence reforms on dry ceramic surfaces and rims every 48 hours despite regular cleaning. This continuous crystallization process leaves people wondering if water is seeping out from below the tiles and causing underlying damage.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Wiping it off every two days
- 2Using standard limescale removers
- 3Using citric acid
- 4Cleaning with acid
- 5Retiling the floor and shower
- 6Soaking with vinegar
- 7Applying baking soda paste
- 8Scrubbing manually with a toothbrush on hands and knees
- 9Considering long-handled electric scrubbers
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“A white crust keeps coming back every 2 days on the dry sides of my bathroom sink”source ↗
“this white crust (I suspect it's efflorescence) keeps forming about 2 days after l clean it. It wipes off very easily, but it always comes back within 48 hours.”source ↗
“The grout seems to be spreading almost like a crystallization process. Any thoughts on what is happening here and whether there is likely damage below the tiles if this is water seeping out?”source ↗
“I had the same loop of cleaning it, thinking I fixed it, then staring at the haze two days later”source ↗
Where this came up
People with this problem also raised
- 10How to get sticky residue off ceramic without ruining it
- 7How to fix white spots on a shower floor finish
- 4How to clean decades of heavy buildup on bathroom hardware
- 7How to get rid of severe black mold on bathroom grout
- 2Why does tile look dirty after cleaning?
- 15How to get bright, oily bath bomb stains out of a tub