Get rid of nasty yellow stains in your plastic bathtub using hydrogen peroxide.
Yellow streaks on walls in bathroom.
Visual cues can also be indirect.
Cracking or bubbling paint or wallpaper could be a sign of mold growing underneath.
Even with well ventilated bathrooms streaks in water based paint is still very common.
Mineral deposits remain on the wall and build up over time without proper cleaning maintenance.
Depending on the species the appearance can vary from bright yellow to muted from powdery to slimy.
Step 1 fill a spray bottle with 3 percent hydrogen peroxide which is found in drugstores or convenience stores for a minimal price.
These lines result after the water evaporates.
You re not imagining things.
Typically these streaks have a slight yellowish tint which is released from the paint ingredients.
The streaks are not all that bad but it is annoying for me who loves keeping my walls fresh and clean.
This will bring out the spots and streaks even more as well as soften it all up for easier removal.
Those drip mark lines on your bathroom walls do exist.
It makes it even easier if you turn your shower on close the door and let the steam from the hot water build up the humidity in the bathroom with the fan off.
The second explanation is that the yellow stuff is you eww or more specifically the oils from your skin lifted off by with hot water and redeposited onto the walls after the humidity in the room dies down.
For the sake of my sanity in shared shower situations i ve chosen to go with explanation 1.