Wallpaper Cleaning Tips

Cleaning Method
Dissolve about two teaspoons of dishwashing liquid in a container of warm water. To prevent the wallpaper from changing color with colored cleaners, use an appropriate cleaner.
Soak a towel or sponge in the solution, then wring out the excess water into a bucket.
First, test the solution in an inconspicuous area of the wall. If it doesn’t cause any damage to the wallpaper, you can start cleaning.
Cleaning Process
Clean using upward and downward vertical motions, along with circular motions.
Do not use too much cleaner, as excess cleaner can cause dirt to stick to the wall.
Test the Solution on a Small Area
Test the solution in a small, inconspicuous area of the wall to avoid potential damage to the wallpaper. The lower parts of the wall are less noticeable and are more suitable for testing.
Using a Second Bucket of Water
This is where the second bucket of water comes in. Take a bucket of clean water and a clean cloth to wash the wallpaper with clean water. Do not use too much water.
You do not want the wall to become damp in the end. To prevent the wallpaper from becoming moist or wet, take another clean cloth and immediately dry the wallpaper.