First pour hot water in the sink and then mix in some dish soap this would help to break the accumulated grease inside the pipe and sink. This trick would be good enough for mild blockages. Dealing with heavy blockage? Then use a plunger along with hot water and dish soap again. We have tried this trick by ourselves and truly it would work within 5 minutes and you would see that the problem of clogged sink has been resolved.
Mixture of Salt, Vinegar & baking soda
This is another solution that you can prepare by yourself at home to break whatever clogged the sink. Make this solution by filling half a cup with salt, vinegar and baking soda and mixing it properly. Now pour this solution in the drain and let it sit for half an hour. After this pour boiling water into the drain and you are done.
Peroxide with baking soda
This is another trick of using Peroxide with baking soda. Just mix half cup of peroxide with half cup of baking soda. Pour this mixture into the drain and cover it up. Let it sit for half an hour and then pour boiling water down the drain. This would help to break any type of clogging.