The restoration of the Sistine Chapel ceiling was officially completed in 1994.
The major conservation campaign began in 1980 and addressed centuries of accumulated grime, candle soot, varnish, and discoloration. Conservators worked carefully to remove deposits while preserving Michelangelo’s original fresco surfaces. The work revealed brighter colors and clearer details than many viewers had previously seen.
The restoration became a major international cultural event. It also prompted debate: some observers questioned whether the cleaning had made the colors too vivid, while the conservators and many specialists argued that the dirt and later coatings had obscured Michelangelo’s palette.
The 1994 completion date applies to the ceiling restoration, not every conservation project in the chapel. The Last Judgment on the altar wall underwent a separate restoration that was completed earlier, in 1994 as well, after work lasting several years. This distinction helps prevent confusion between the ceiling and altar-wall campaigns.