No tan — expect for the one that comes in a bottle — is safe. It's a sad but realistic fact that we'll continue to preach ad nauseam (especially with summer just around the bend) until we're blue in the face (or our fingers get carpal tunnel). Because even though we, along with dermatologists, warn against bronzing up under the sun's UV rays, there are people who still prefer a natural glow over a faux one. And then there are some who take tanning to the extreme, like those who lather up with Coca-Cola before stepping out into the sun.

The technique, which involves applying Coca-Cola — as in the soft drink — to one's entire body just like a tanning oil before heading outdoors, is said to give users a deep tan. This is due to the fact that the soda contains a caramel dye, which when applied to the skin, can give it that coveted characteristically bronzed tone. Unfortunately, the dangerous "trend," which originally gained traction in the U.K. last year, is still prevalent now that temps are rising and people are spending their summer at the beach.

Which is why we reached out Joshua Zeichner, director of cosmetic and clinical research in dermatology at Mount Sinai Hospital in New York City, to warn of the risks behind the Coke self-tanning technique. "While some feel that Coca-Cola can speed up your tan, it actually can be dangerous, and I recommend staying away from it," warns Zeichner, tells Allure. "Applying it to the skin may lead to a temporary darkening or staining of the skin, but because sodas are acidic, it may exfoliate dead cells, enhancing the ability of UV light penetrate into the skin. Ultimately, this may increase your risk of a sun burn."

Instead, skip the tan altogether and load up on sunscreen — at least SPF 30 — about a half hour before heading outdoors. If you can't get through the season without some sort of glow, we recommend one of these Allure editor-approved self-tanners, like the clear (clear!) Tan-Luxe Hydra Mousse or the Best of Beauty-winning

St. Tropez Self Tan Express An Allure Breakthrough Award–winning fast-acting self-tanner foam for the body

, because as Zeichner once again reminds us: "There is no safe way to tan, except if it comes from a bottle."

More on the dos and don'ts of tanning:

Now, follow these tips for safe tanning: