An air inlet for an engine of an aircraft, the air inlet having a duct feeding outside air to said engine together with a filter system combining at least one filter and at least one bypass device. The arrangement can be particularly advantageous for make-up andor a skin care product, and includes a container forming at least one recess capable of accommodating the product. The apparatus also includes a centering device that forces the gripper arms back into a centered position after a deflection thereof.