Even today, it is commonly believed (often due to misinformation by the mass media) that aerosol cans still use as a propellant gas the CFCs (chlorofluorocarbons) responsible for the hole in the ozone layer. In reality, since 1989 CFCs have been banned in Europe, and replaced by LPG (liquid petroleum gas - a mixture of butane, isobutane, propane).

What is ozone?
The earth's stratosphere contains a relatively high concentration of ozone, a gas made up of three oxygen molecules (O3), which forms a natural screen against the dangerous ultraviolet radiation (UV rays) from the sun.

What is the hole in the ozone layer?
Every year, during the Southern Hemisphere spring, there is a reduction in the concentration of stratospheric ozone in the region around the South Pole, due to natural variations. Unfortunately, as a result of pollutants released into the atmosphere, starting from the mid-seventies this periodic reduction became increasingly amplified, so that the phenomenon began to be referred to as the "hole in the ozone layer". Chlorofluorocarbon CFCs contribute to this thinning of the layer of atmospheric ozone.