Maybe bartenders deserve hazard pay—especially if they’re mixing margaritas in the sun.

Did you know a nasty chemical burn can result from a combination of lime juice on the skin and sun exposure?

Phytophotodermatitis—otherwise known as margarita dermatitis, and lime disease— can result from contact with other plants, such as carrots, parsley, and other citrus fruits.

But it’s most common in connection with limes.

The juices and oils from those plants contain photosensitizers, which make skin extra-sensitive to sunlight.

Depending on the severity, burn experts say margartia dermatitis can be treated with moisturizer and sunscreen to bacitracin, and bandages. Or just thoroughly wash your hands after slicing limes.