Liquid Plumber What Is The Best Way To Unstop A Slow Drain Without Resorting To Liquid Plumber?

What is the best way to unstop a slow drain without resorting to liquid plumber? - liquid plumber

My bathroom sink is partially clogged. It flows very slowly, so that it can not water the things away (waste toothpaste, razor stubble, etc.). The only thing that could clog the drain is the hair of the beard, sometimes I start to shave the whole way. What would be the best way to try to help without a product like liquid plumber jumps, or would I prefer?