Carbon capture technologies are expected to play a significant role in the energy transition, as a powerful tool for the decarbonisation of the already existing power stations and the hard-to-abate industrial sectors, and as part of biogas upgrading systems and blue hydrogen production processes. Nowadays, amine scrubbing stands among the most solid technologies in the carbon sequestration field, though being renowned for the high energy regeneration requirements, the toxicity, the corrosiveness and the fast degradation they undergo. Ionic liquids (ILs) are emerging as a viable alternative to the aqueous amine solutions for post-combustion carbon capture processes. In this regard, recent studies show that choline proline ([Cho][Pro]) has a very good potential, thanks to its ring structure and to the presence of amine functionalities in the amino acid moiety – which promote the physical and the chemical CO2 absorption, respectively.