Classroom Questions Questions for ‘Tattoos: The good, the bad and the bumpy’ A tattoo artist adds red to an existing tattoo. Complex images can require many sessions to complete. Belyjmishka/iStockphoto Share this:FacebookTwitterRedditGoogle ClassroomEmailPrint By Science News for Students May 11, 2017 at 6:05 am Classroom questions are available for free with registration. Learn more Register to access: Client key* E-mail* Log in Already Registered? Enter your e-mail address above.