The global oceans are gearing up to spray all that 1980s hair spray back in our faces. Chlorofluorocarbons (CFCs), the aerosol chemicals that tore a hole in Earth’s protective ozone layer within years of their mass production, are set to make a comeback in the late 21st century, in a process accelerated by climate change, researchers say.

The Montreal Protocol banned the use of CFCs worldwide in 1987, after researchers discovered that CFCs had damaged the ozone layer that protects life on Earth from harmful ultraviolet radiation. And the Montreal Protocol has mostly worked — CFC levels in the atmosphere have dropped sharply in recent decades, and the ozone layer has begun to repair itself, as Live Science reported. But all those CFCs already released into the atmosphere had to go somewhere. And for many of those molecules, that somewhere was the world’s oceans.