Materials you'll need:
Drain snake or wire hanger
Put on rubber gloves to protect your hands.
Remove any visible debris from the drain. Use your fingers, a pair of tweezers, or pliers to remove any hair, soap scum, or food particles that are visible on the surface.
Use a plunger to try and dislodge the clog. Make sure there is enough water in the sink or tub to cover the rubber end of the plunger. Place the plunger over the drain and pump up and down several times until the water starts to drain. If the water doesn't drain or drains slowly, move on to the next step.
Use a drain snake or wire hanger to clear the clog. Straighten out a wire hanger and insert it into the drain. Use a twisting motion to try and break up the clog or pull it out. Alternatively, use a drain snake by inserting it into the drain and turning it clockwise to break up the clog.
Pour a mixture of 1/2 cup of baking soda and 1/2 cup of vinegar down the drain. The mixture will fizz and bubble, which will help to break up any remaining clog.
Pour boiling water down the drain to flush out the clog and any remaining debris.
If the drain is still clogged, repeat steps 3-6 until the drain is clear.
Clean up any remaining debris and sanitize the area with disinfectant.
If the drain is still clogged after several attempts, it may be time to call a professional plumber to help you out.
That's it! Follow these steps and you should be able to unclog a drain with ease.