Secret ingredient found in Da Vinci painting March 29, 2023 • Clark Kent 0 It appears Da Vinci used egg yolk to help keep the oil paintings last longer. (Visited 1 times, 1 visits today) Related posts: Witness contacts police after woman swims into Biscayne Bay and disappears FBI Releases Photos Of Pompano Beach Bank Robbery Suspect People Mourning Loss Of Archbishop Desmond Tutu Fed Chairman Warns Of Higher Interest Rates As Inflation Woes Continue Police search for 4 suspects who bailed out of vehicle in Lauderhill