Light fastness refers to the resistance of a cover to the effects of light (especially sunshine, daylight, halogen lighting). Discolouration of the material under the influence of light cannot be prevented in upholstery fabrics. Curtains or blinds can be used to protect against this natural change caused by light. Fabrics and upholstery materials can show colour deviations in the areas exposed to light after only a few weeks if the light is too strong. This has no effect on use or durability