The invention relates to a hearing instrument comprising an ITE-part adapted for being positioned in the ear canal of a user, the ITE-part comprising a housing comprising first and second openings adapted for facing towards the ear drum when said ITE-part is mounted in the ear canal, said first and second openings being adapted to allow first and second functional elements of the ITE-part to be in communication with the ear canal, the hearing instrument further comprising a wax filter adapted to fully or partially cover said first and second openings. The invention further relates to the use of a hearing instrument, to a method of wax protection in a hearing instrument and to a wax filter. The object of the present invention is to provide an alternative solution to protect relevant parts of a hearing aid against wax deposition. The problem is solved in that the wax filter comprises at least first and second distinctly different parts for covering respectively, said first and second openings, each of said first and second distinctly different parts of the wax filter being individually optimized. This has the advantage of providing a flexible one-piece wax filter that is optimized according to need. The invention may e.g. be used for the hearing instruments comprising an in-the-ear-part.