Liposomes are composed of phospholipids, which in an aqueous environment can non-covalently associate into bi-layer forming uni-or multilamellar vesicles . Both the interior and exterior of the liposomes are in contact with an aqueous environment . Liposomes have been extensively explored, mainly in the field of oncology . Since the first authorisation of a liposomal therapeutic in 1995, several other liposomal systems have transitioned into the clinic .