Assuming you have a simple clog near the actual drain of your sink or bathtub the following is the best path to take to get things working again.
Upstairs bathroom sink clogged.
How to unclog a bathroom sink drain.
For example and upstairs bathroom may have a clog in the main second level drain pipe or the vent stack for the upstairs.
The problem is almost always caused by hair and gummy soap scum that get caught on the stopper or pivot rod and clogs the drain.
But luckily the fix is usually simple and takes only about 15 minutes.
Dishwashers put out a large quantity of water in a short time so the pipes may no longer be able to handle the volume.
There s no single solution that will always fix a clogged bathroom sink.
Allow the mixture to sit for about 15 minutes and boil a pot of water while.
The chemical reaction from the baking soda and vinegar may be able to dislodge the blockage in your pipe.
Slow moving or stopped up drains are common in bathroom sinks.
This video will show you how to unclog a bathroom sink.
However there are a variety of options you can try starting with the easiest ones that require only a few household items.
If you need to unclog a slow running bathroom sink drain pour baking soda down the drain followed by vinegar then plug the drain with a rag or a sink stopper.
Allow your sink to drain completely.