Generally, ears make just enough wax to protect the ear canal from water and any infection. Sometimes, ears may produce more wax than usual, leading to the accumulation of wax in the ears. The most common cause of impactions and infection due to ear wax is the use of cotton swabs (and other sharp objects), which removes only superficial wax but pushes the rest of the wax deeper into the ear canal. Earwax blockage is also more common in Hearing aid and earplug users.