Recent diagnostic investigations have revealed previously invisible details in the famous fresco cycle of the Brancacci Chapel, located in the Church of Santa Maria del Carmine in Florence. The analyses, which were conducted on works by Masolino da Panicale, Masaccio, and Filippino Lippi, revealed a verdant meadow, unprecedented fig and apple leaves, and dense vegetation in the scenes of 'The Temptation of Adam and Eve' and 'The Expulsion from Eden'. The study campaign, funded by Friends of Florence and the Jay Pritzker Foundation and coordinated by SABAP Firenze in collaboration with the National Research Council (CNR), made use of advanced technologies such as macro-XRF to map chemical elements such as arsenic, which is found in the yellow pigment of orpiment. This pigment, which was also utilized by Fra Angelico and Taddeo Gaddi, has been found in areas that increased divine light in paintings. Experts reject the notion that these nuances are the consequence of seventeenth-century censoring efforts. It needs to be determined why these decorations are no longer visible, with ideas including pigment modification or the effect of subsequent cleaning. A new phase of study is currently beginning, in conjunction with SUPSI in Mendrisio.