When your shower is not draining like it should, one common cause is hair! The two best ways to clear a hair clog are: 1) 1 cup of baking soda, followed by 1 coup of vinegar down the shower drain, followed 5 minutes later by 2 quarts of boiling water; or 2) plastic hair snake - insert, twist, and pull (repeat as necessary). If that doesn’t work, call...