Why do some have dry earwax?

Some people have got wet earwax and some have dry earwax, and a team of international scientists have spent time finding out why this is. The group of experts discovered that a single gene decides what type of wax your ear makes — wet or dry. But even after the huge study, they still aren’t sure what earwax is for. Possible suggestions include to trap insects, to help your ears keep themselves clean and to prevent the passages inside your ear drying out.