Abstract. The current study presents the results obtained using a hybrid setup of correlated complementary techniques that provides a real-time complex data package, with no sampling or sample preparation, by means of quasi-simultaneous analyses with micrometrical precision, dedicated to conservation and restoration of polychrome multilayer mural paintings. The paint layers were subjected to atomic and molecular characterization in order to identify the pigments and the binders, using Laser Induced Breakdown Spectroscopy (LIBS), Fourier Transform Infrared Spectroscopy (FTIR) and Hyperspectral Analysis (HYS). The data were correlated and used for the laser cleaning tests @1064 nm and @532 nm. The laser cleaning was assessed using colorimetry and optical microscopy techniques.

Key words: Laser cleaning, LIBS, FTIR, XRF, contemporary art, a fresco, a secco.