Olive oil always works for me whether hot or cold.......it saves me going off to the docs for syringing......with the amount of swimming I do daily and shampooing the old bonce, diving when abroad, I do get quite a bit building up......last time i went to the nurse at my surgery after being told by my GP to use 5 days of olive oil drops to help soften the wax, she told me that she could see the eardrum and i did'nt need to have it done....just advised me to use 1 or 2 drops every now and then to help them not get clogged up.
They dont like syringing if they can help it as the pressure of this process COULD perforate the eardrum, so will only do so, in my surgery at least, if putting oil in does'nt help soften the wax.
By having the syringing done without loosening the wax first can seriously damage your ears my GP's have said.
Otex is pretty good too btw....prevents the need for syringing.