Aerosols no longer contain CFCsCFCs are compounds that have been used as propellants in aerosol cans and blowing agents in foams since the 1930s. In the late 1980s, research indicated that CFCs cause the ozone layer in the upper atmosphere to deplete. Subsequently, on January 1, 1989, The Montreal Protocol on Substances that Deplete the Ozone Layer was enforced. The aerosol industry promptly responded by replacing CFCs with liquefied gases (and in some cases compressed gas, consisting of air, carbon dioxide, nitrogen and nitrous oxide). Still, the misconception that aerosols cause damage to the ozone layer is still proving a barrier for some consumers.
Ten million bicyclesAnother misconception about aerosols is that they are synonymous with wasteful packaging, even though there are plenty of innovative aerosols on the market that concentrate products. Take Unilever’s compressed aerosol can, for instance, which lasts twice as long as a regular aerosol can and even uses 25 percent less gas and is made of 25 percent less aluminum. Alan Palmer, vice-president of R&D at Unilever elaborates:
“This technology could not only change the face of our industry, but help protect the long-term health of our planet too. There are three billion aerosol deodorants sold every year worldwide. If they were all compressed, we could save 21,000 tons of aluminum, enough to build ten million bicycles.”