Under-18s means:

Piercings on minors only with the permission of the legal representative

For legal reasons, it is not allowed to pierce under 18 years of age. However, if your parents agree to the piercing, they can accompany you to the appointment and sign their consent on the spot. Please note that both you and your parents must be able to present a valid ID.
If your parents cannot or do not want to accompany you to the appointment, we need the written consent of the legal representative, i.e. at least one parent.
You can download, print and complete the parental authorisation form here at the bottom of the page. In addition to consent, we also need a copy of the ID card of the parent who signed the permit.
We reserve the right to contact the parents in case of doubt.

Zum Download:
Parental authorisation form