Very true!
http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/med/ear-oreille-eng.php
There is no scientific proof to support claims that ear candling provides medical benefits. In fact, Health Canada conducted laboratory tests that showed that ear candling produces no significant heating or suction in the ear canal.
However, there is plenty of proof that ear candling is dangerous. Ear candling poses a risk of fire. It can also cause serious burns and other injuries if hot wax drips into your ear, or onto your skin or hair. There have been reports of several cases of ear injury in Canada.
In 1996, a report published in the medical journal Laryngoscope concluded that "ear candles have no benefit in the management of cerumen (ear wax) and may result in serious injury." Health Canada agrees.
The authors of the report, all of whom were medical doctors, conducted a survey of 122 ear specialists. They found 21 cases of serious injury caused by ear candling. In six of these cases, patients temporarily lost their hearing. Other problems reported among the group included:
Thirteen cases of burns
Seven cases where the wax from the candle had blocked the ear canal
One case of a punctured ear drum