The answer to 'drain slow draining' is that a slow-draining sink or tub is a common plumbing problem with several possible causes, including a clogged drain, buildup of hair or debris, or a problem with the drain pipe. The symptoms are water draining slowly or not fully clearing the sink or tub.
Some DIY solutions to try include using a drain snake or plunger to clear the clog, or using a chemical drain cleaner. However, if the problem persists or you're unable to clear the clog, it's best to call a professional plumber to inspect the drain and pipes and provide a more thorough solution.