To guide conservators in their decisions in active conservation of polystyrene materials, seven adhesives were tested before and after light ageing. The material was investigated through the assessment of working properties, appearance, colour measurement, tensile testing, hardness measurement, assessment of break type, SEM-imaging, ATR-FTIR-imaging and assessment of reversibility. Based on a survey among conservators, the adhesives included were acrylates (Paraloid B72 in acetone:ethanol, or ethanol, Paraloid B67 in isopropanol, Primal AC-35, Acrifix 116), epoxies (Hxtal NYL-1, Araldite 2020) and one cyanoacrylate (Loctite Super Attak Precision).