If your drain is clogged with hair, baking soda can dissolve hair in a drain.
To try this safe and easy method at home - first, pour a cup of baking soda down the drain. Then pour a cup of vinegar (white vinegar) down. Allow the mixture to sit for several minutes. Keep an eye out for bubbling in the drain (this is caused by the reaction between the baking soda and vinegar). Once the bubbling stops, wait a few more minutes then pour some boiling water down the drain. Repeat until the clog is cleared. Keep at it, it can take a long time.
With a heavy-duty clog, you might need something more powerful. In this case, try snaking the drain, plunging it or calling a local Edmonton drain cleaning company to get the job done.