8 years ago No Comments

(pronounced foh-toh-YEHL-oh-ing)

When subjected to the UV component of indirect or direct sunlight, many very light-colored or white products, such as fabrics, wallcoverings, carpets, and plastic goods, turn yellow over time. Photoyellowing is exacerbated when the items contain fluorescent whitening agents, which are often applied to textiles to improve product brightness.