The Medford Public Library invites teens in middle school and high school to have henna applied to their hands by a professional artist. These tattoos will remain for approximately one week.  Space is limited. Registration is required through the library’s online calendar. Also required is a permission slip signed by a parent or guardian. Permission slips are available in the Teen Section and online at medfordlibrary.org. Signed slips can be passed in early or brought to the event. Henna will be applied in order of arrival to the event.