Chinese researchers from Jiangnan University (in November 2016) made a recent break through by adding melanin in small quantities to polyurethane (a polymer), making the material sturdier. Melanin is the natural protein found in the skin, hair and the iris of animals that gives color as well as protects them from ultraviolet rays. On the other hand, Polyurethane is a polymer used in materials to manufacture products such as tires, wheels and foam seating to name a few. Will skin pigments in polyurethane revolutionize materials used in manufacturing? https://www.spireresearch.com/newsroom/spirethoughts/skin-pigments-to-strengthen-sofas/