The upstairs bath and sink are clogged I tried liquid plumber and it did nothing. I also noticed every few days it starts to back up a little. The toilet in the upstairs works fine with a fast flush. The down stairs bath room works fine as well so does the kitchen sink kitchen sink drains quickly no issues at all. Need help George

You probably have a hair or soap scum clog in the drain line. Chemicals can only do so much, then you need to auger the drain line.