A tattoo artist works during the annual Israel Tattoo Convention in Tel Aviv, Israel, October 8, 2016. Around 140 tattoo artists from Israel and other countries participated in a 2 day fair in Tel Aviv. (Photo by Baz Ratner/Reuters)

Tattoo devotee Edyta shows off her body art during The Tattoo Jam Festival on August 5, 2011 in Doncaster, England. The Tattoo Jam Festival is Britain's biggest gathering of tattoo professionals and skin art devotees. The event hosts over 300 artists working in the exhibition hall of Doncaster Racecourse revealing their latest designs and techniques. (Photo by Christopher Furlong/Getty Images)

Ave, 4 years-old, of the United States, paints on her father's hand during the International Tattoo Convention Bucharest 2016 in Bucharest, Romania, Sunday, October 16, 2016. Prominent tattoo artists from across the world displayed their skills in the Romanian capital over the weekend. (Photo by Vadim Ghirda/AP Photo)

A girl plays with colourful papers at the 23rd Sziget (Island) Festival on Shipyard Island in Budapest, Hungary, 13 August 2015. The festival is one of the biggest cultural events of Europe, offering art exhibitions, theatrical and circus performances and music concerts. Almost 200 performers from 47 countries will entertain the hundreds of thousands of visitors from 11 to 18 August. (Photo by Balazs Mohai/EPA)

Paul Doherty of Australia with tatoo against Timothy Mareke of Solomon Island during the men's 75kg class at the Sydney International Invitation Boxing held at the Sydney Exhibition Centre, Darling Harbour, Sydney, Australia.

Emilio Gonzalez from Venezuela poses during the Cali Tattoo Festival in Cali, Colombia, September 12, 2015. (Photo by Jaime Saldarriaga/Reuters)

Lucia Moreno, 28, participates in a Miss Tattoo contest during a tattoo convention in the Andalusian capital of Seville February 14, 2015. (Photo by Marcelo del Pozo/Reuters)