1 Prepare for safe work
Ventilate the room, put on gloves, and first test the product on a hidden spot. Protect children, pets, textiles, and sensitive surfaces.
⚠ Warning: Never mix bleach with vinegar, acids, ammonia, or other cleaners. The mixture can release toxic gases.
2 Determine the condition and cause
Measure humidity before and after showering and check if the mirror remains wet for more than half an hour. Inspect cold corners and the ceiling.
3 Perform the key check
Turn on the fan before showering and leave it running after, shorten long hot showers, and wipe water off tiles and glass.
4 Do the repair or maintenance
Clean the ventilation grille and ensure air supply under the door. Persistent mold or a wet wall requires verification of ventilation and insulation.
? Tip: Photograph the initial state and change only one thing at a time. This makes it easier to determine what really solved the problem.
5 Test the result
Remove product residues according to the label, dry the surface, and inspect the result in daylight. If the problem returns quickly, find the source of moisture, dirt, or failure.