I get wax buildup in my ears and I use an ear syringe filled with warm water to remove the wax. An ear syringe is just a rubber bulb. Here is a link to one:
Amazon.com
Anyway, while taking a shower I get the water as hot as I can comfortably stand, then hold my cupped hand against my already washed torso, and fill the syringe with the water. Then I gently squirt the water into my ears to wash the wax out. It usually takes several syringe fulls but the wax gets warm and comes loose and washes out. The process is painless, at least for me. It may make some folks dizzy. I'm dizzy all the time so I'm used to it and don't find it bothersome.
Eric