As a home dweller the chance of you having a clogged up drain are pretty good. The odds of having a clogged up drain go up the more people in the house you have. Once you have a clogged up drain and have procrastinated unclogging it long enough, you''ll be faced with two choices, DIY or all a professional. My thought is try to unclog it yourself and if you have no luck then it's time to call the pros and fork out some $$$. Follow along with me while I go through the process of a DIY How to Unclog a Bathroom Sink in Singapore. There are many ways to do this with household items but in many cases my trusty old pair of hemostats will do the trick. If you don't have them there are a number of household items that will do. Some of those are: A Wire Hanger.
Baking Soda and Vinegar. Mix baking soda with vinegar in a measuring cup, a Wet & Dry shop vacuum, Boiling Water, Cleaning the pipe, or caustic soda.
Another method commonly used is to use a clean plunger to plunge on the sink. The plunger method, however, will not serve you very well if there is a bunch of hair trapped around the drain. This works better if it's some debris caught down farther in the pipe. If the hemostat method doesn't work well for you from topside then it's a good idea to take apart your P-trap area.
Shower drains get plugged up all the time especially if you have girls in the house. One must get the fine art of unclogging drains down to a science unless you'd prefer to foot the bill for someone else to come and do it. A good DIY technician should be able to get this job done in under a half and hour depending on severity. A good pair of hemostats is very handy for this job but if you don't have hemostats, do not worry as either needle nose pliers or even tweezers will work. Ideally, the water will be drained when you are working on this but many times you'll find yourself working in standing water. In this case the water slowly drained so I could at least stand above where I was working. The trick here is to take of this problem once the drain starts draining slowly, NOT when the drain completely quits draining. So, once you have the drain plug unscrewed (turn counter clockwise to unthread), then take your extraction tool and start to slowly remove the nasty hair and whatever else is attached to it from the drain. Repeat until the drain is free of any foreign material and is like new. Test to ensure proper drainage before walking away. In most situations similar to this there is an accompanying odor that you'll notice so you may want to have some kind of small trash receptacle nearby for which to deposit your removed debris. Good luck fellow DIY Technicians.