UV absorber is a kind of light stabilizer, which can absorb the ultraviolet part of sunlight and fluorescent light source without changing itself.
UV absorbers are currently the most widely used light stabilizers. According to their structure, UV absorber can be divided into salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitriles, triazines, etc. The most widely used are benzophenones and benzotriazoles.