System with a brush-product packaging device and tray packaging for forming a receptacle for at least two brush-product packaging devices

A system with a brush product packaging device for receiving a brush product, with an application head and with a handle, comprising:

• at least one packaging base body which is configured to form an at least substantially closed receiving region for the brush product and which is implemented at least largely of a paper material,
• and at least one holding unit, which protrudes at least partly into the receiving region and is configured to hold the brush product at least partly in a position relative to the receiving region, and which is implemented at least largely of a paper material;
• wherein the at least one holding unit comprises at least one folding element,
• which is configured for a fixation of the brush product in the receiving region,
• and with a brush product, which is accommodated in the brush product packaging device,
• wherein the folding element is implemented by a separate component that differs from the packaging base body, and the folding element is implemented by an insert piece for the packaging base body and is configured to be arranged in the receiving region of the brush product packaging device,
• wherein the folding element is fixed by gluing and/or by sealing.