Interestingly, many Portuguese conservationists have been preserving artworks with saliva. They say that saliva is safe to use and has a great cleaning effect. A research team at Portugal’s Lisbon University conducted a study and found that saliva actually has a cleaning effect. Unlike regular detergents, saliva contains digestive enzymes. Since these enzymes dissolve all kinds of substances, they can wash off all the dirty things from the surfaces of artworks.
Yejin Hwang Staff Reporter
1. How does saliva have a cleaning effect?
1. To preserve artworks, what would you like to use? Detergents or saliva?