Dr. Grime, known for his meticulous attention to detail in art conservation, utilizes a Tide stain pen for cleaning purposes rather than relying on saliva. This contrasts with the practices of many art conservators, who often use their spit as a cleaning agent. Andrea Chevalier, a senior paintings conservator at the Intermuseum Conservation Association, explains the process they follow, emphasizing the use of bamboo sticks to create cotton swabs that are...