'CFC Free' label on canister of deodorant, 1999.
© Science Museum / Science & Society Picture Library
Close-up of canister label. In 1984 scientists confirmed that CFCs (chlorofluorocarbons) were contributing to the depletion of the ozone layer which protects the earth's surface from harmful radiation. This led to the development of aerosols utilising alternative 'ozone-friendly' propellants. Here the manufacturers of the deodorant are advertising the environment-friendly nature of the product.