Isobutane

A colourless gas that has a faint odour that resembles gas and used an aerosol agent. Considered safer than ozone-destroying CFC. It is a good foaming agent therefore often found in hair products. Isobutane is also a solvent that helps to dissolve other ingredients, making them easier to absorb and additionally has antimicrobial properties. However, it is highly flammable and care must be taken with its use. There are some environmental concerns as the production and use of isobutane can have environmental impacts, such as contributing to air pollution and greenhouse gas emissions.