Why the usage of the following products given in the image have to be minimized?
They contain CFC (Chlorofluorocarbons).
CFC usage is more in modern days because it is easily manufactured at cheaper rates. CFCs have been used extensively and in such a wide variety of applications, such as shaving creams, spray paints etc. Chlorofluorocarbons (CFCs) react with the ozone layer, causing a hole that exposes the surface of the earth to stronger UV radiation.