Particularly in European latitudes, lacquers are subjected to very severe, frequently changing effects of weather. Damage to the polymer material caused by UV light, oxygen, dampness or air-pollution, can lead to complete detachment of the lacquer from the coated base. This means that the lacquer can no longer fulfil its actual purpose, that of protecting the substrate, which itself is subsequently destroyed.
It was the need to avoid this damage, which led to the development of light- protective agents. Modern light-protective agents often consist of a combination of UV absorbers and oxygen stabilisers. The selection and blending of the correct light- protective agents is a crucial part of the resistance of lacquers to weather and ageing.