Sistine Chapel ceiling "The whole world came running when the vault was revealed, and the sight of it was enough to reduce them to stunned silence." The frescoes of the Sistine Chapel were restored between June 1980 and December 1999, with preliminary tests taking place in 1979. The first stage of restoration, the work upon Michelangelo's lunettes, was achieved in October 1984. The work then proceeded on the ceiling, completed December 1989 and from there to the Last Judgement. The restoration was unveiled by Pope John Paul II on 8 April 1994. The restoration team comprised Gianluigi Colalucci, Maurizio Rossi, Piergiorgio Bonetti, Bruno
Sistine Chapel layer of animal glue and "lamp black", all of the wax, and all of the overpainted areas were contamination of one sort or another: smoke deposits, earlier restoration attempts, and painted definition by later restorers in an attempt to enliven the appearance of the work. Based on this decision, according to Arguimbau's critical reading of the restoration data that have 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. The only reproduction of the Sistine