In order to unclog your drain, you will need the following materials: vinegar, baking soda, and a spoon. Make sure that you get baking soda instead of baking powder.
Then, take about two teaspoons of baking soda and put in in your sink around the drain area. Pour some of the vinegar into the drain. Stop when you start to hear the fizzing since you do not want all of the baking soda to go down the drain.
What happens next will be like magic! When baking soda and vinegar are combined together, they will react violently, creating surges upwards and downwards in an attempt to break free of the clogged drain.
Just let it sit as it fizzes in your drain, and hopefully your sink or bathroom shower tub will be unclogged in no time!