In this January 11, 2017 photo, Erika Martins uses black electrical tape to create a customer's bikini, in order to attain crisp tan lines, on her rooftop Erika Bronze salon in the suburb of Realengo in Rio de Janeiro, Brazil. Martins wears a microphone connected to an open speaker system in order to direct her assistants to clients who need more tanning lotion or a sprinkling of water on their skin. (Photo by Renata Brito/AP Photo)





In this January 11, 2017 photo, rolls of electrical tape used to create custom bikinis, which offer crisp tan lines, sit at the Erika Bronze rooftop salon in the suburb of Realengo in Rio de Janeiro, Brazil. While pulling it off would normally hurt, temperatures close to 100 degrees Fahrenheit (40 Celsius) ensure plenty of sweat and a smooth removal. (Photo by Renata Brito/AP Photo)





In this January 15, 2017 photo, women in search of crisp tan lines wear bikinis created from black electrical tape at the Erika Bronze rooftop salon in the suburb of Realengo in Rio de Janeiro, Brazil. Today, Martins' rooftop fits 30 women and is at full capacity seven days a week, as long as the sun is out. Her Facebook page has 68,000 followers. (Photo by Renata Brito/AP Photo)





In this January 15, 2017 photo, a woman shows her crisp tan line, underneath a bikini made of black electrical tape at the Erika Bronze rooftop salon in the suburban neighborhood of Realengo in Rio de Janeiro, Brazil. Clients must book and pay about $20 in advance to guarantee a spot on one of the terrace lounges. (Photo by Renata Brito/AP Photo)





In this January 15, 2017 photo, an employee sprays a customer wearing a bikini made out of black electrical tape, in order to attain crisp tan lines, at the rooftop Erika Bronze salon in the suburb of Realengo in Rio de Janeiro, Brazil. Despite being sprinkled with water, some tanners feel dizzy or even faint after a rooftop session. (Photo by Renata Brito/AP Photo)





In this January 11, 2017 photo, a woman in search of crisp tan lines lounges in the sun wearing a bikini made of black electrical tape at the Erika Bronze rooftop salon in the suburb of Realengo in Rio de Janeiro, Brazil. Dermatologists are more horrified than impressed with the technique, which they say can increase the chance of getting skin cancers, including melanoma. (Photo by Renata Brito/AP Photo)





In this January 11, 2017 photo, women in search of crisp tan lines wear bikinis made of black electrical tape at the Erika Bronze rooftop salon in the suburb of Realengo in Rio de Janeiro, Brazil. Tanners who don't want sunblock or want to stay out longer than recommended must sign a disclaimer absolving the salon of liability. (Photo by Renata Brito/AP Photo)