Dr. Costanza Miliani (Researcher of CNR—ISTM Perugia, Center of excellence SMArt Scientific Methodologies applied to Archeology and Art) measuring in situ the infrared reflectance spectrum of the wall paintings by Filippo Lippi with FTIR with fiber optics to classify organic materials present on the surface, such as proteins and lipids, without sampling. Photo: F. Piqué.