This paper is a continuation of a previous study that was carried out to determine the suitability of a series of organic consolidants employed in the process of conservation-preservation of a modern sculpture (1). The work is a sculpture carved out of phenolic foam (2) with a series of particularities that makes it unique and unrepeatable. Spectral data was analyzed using measurements made on this material after it had been treated with various organic consolidants, using different concentrations and methods of application. Measurements were also taken after 3600 hours of UV light accelera- ted ageing. UV-Vis was selected because it is a non-destructive technique of great utility for making quantitative assessments, by means of laboratory measurements, of which are the most appropriate materials to preserve the artistic work and also what materials to use in different conservation treatments (in terms of the variations in colour that can occur after the material has been applied or predicting its chromatic resistance over time).