Having visible tan lines and sunburn marks used to be a dreaded part of summer that everyone hopes to avoid. But now, having a even tan is so last summer. Sunbathers across the nation are sharing photos of their burns on social media with the hashtag #SunburnArt to show off their elaborate tan lines.

Sunburn Art is exactly what it sounds like -- a sunburn in the shape of flowers, names or other designs that creates a tattoo-like appearance on body parts such as the back, stomach, arms or legs. The burns are created by covering a specific area of skin with sunscreen to block it from the sun, and then spending time in the sun. Social media users have been sharing their end results -- some simple patterns, others more elaborate works such as the Batman logo and the Mona Lisa. But, Sunburn Art is also exactly as dangerous as it sounds.

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"While it may be entertaining, it is intentionally exposing your skin to harmful ultraviolet radiation," Dr. Thomas Rohrer, a dermatologist, told CBS News.

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According to the American Cancer Society, more than 73,000 cases of melanoma, or skin cancer, will occur in 2015. Risk factors include being easily sunburned, severe sunburns in the past, older age and exposure to ultraviolet radiation from sunlight or tanning beds.

"To increase your skin cancer risk for the purpose of innovative body art is not recommended," said Dr. Debbie Palmer, a dermatologist in Westchester, according to the New York Daily News. "Sunburn's effects are long-lasting."

Dermatologists have made it clear that this is one social media trend you shouldn't follow. Make sure your skin is protected this summer by using sunscreen daily.