Fluorescent Brightener

It is also named Optical brighteners.Optical brighteners for plastic are chemicals that are added to plastic materials to enhance their appearance by increasing their whiteness and brightness. They absorb ultraviolet light and re-emit it as visible blue light, which makes the plastic appear whiter and brighter.Optical brighteners work by converting UV light into visible light, which masks the natural yellowing or dullness of plastics. They are commonly used in various plastic applications such as packaging materials, films, fibers, and molded products.