The Air Quality Index (AQI) allows you to identify how polluted a geographic location is by measuring a combination of aggressors found in the air. An aggressor is an environmental factor that can have a negative impact on your skin. Once you know the aggressors your skin may be exposed to, you can protect against them.

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Diesel particulate matter is the primary ingredient of diesel exhaust fumes and is a key component of pollution. Diesel particulate matter has been linked to inflammation and a trigger of skin sensitivity, disrupting the skin’s natural processes. 


Ozone is an air pollutant which is toxic to humans and vegetation. This gas is everywhere, but is particularly prevalent in industrialised areas. Ozone has been identified as causing oxidative stress in the skin, promoting the release of the skin’s natural defences which can lead to skin irritation. Oxidative stress is the imbalance between the production of free radicals and the skin’s ability to repair the resulting damage.


Multiple chemicals in tobacco smoke have been shown to trigger the breakdown of collagen and elastin, key components in helping to keep skin firm and fight signs of ageing. 


Soot is created through incomplete combustion, which occurs when a fuel is burnt without sufficient oxygen, releasing carbon particles (soot). Soot particles are invisible to the naked eye but can stick to your skin, which may cause irritation, worsen skin allergies and induce oxidative stress.

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