Restoration of the Sistine Chapel frescoes of the work. Based on this decision, according to Arguimbau's critical reading of the restoration data that has been provided, the chemists of the restoration team decided upon a solvent that would effectively strip the ceiling down to its paint-impregnated plaster. After treatment, only that which was painted "buon fresco" would remain. According to critics, the inherent problem with this approach is that it relied heavily upon an assumption that Michelangelo only painted "buon fresco", that he was always satisfied with the result at the end of the day, and that in four and a half years spent on the
Sistine Chapel with wet straw and chemical additives — it means that no successful election has yet occurred. The first papal conclave to be held on the Sistine Chapel was the conclave of 1492, which took place from August 6 from August 11 of the same year and in which Pope Alexander VI, also known as Rodrigo Borja, was elected. The conclave also provided for the cardinals a space in which they could hear mass, and in which they could eat, sleep, and pass time attended by servants. From 1455, conclaves have been held in the Vatican; until the Great Schism, they