Liposomes, one of the drug delivery systems, are spherical vesicles consisting of single or multiple layers and also having an aqueous phase between them. They are capable of transporting molecules in water and oil, controlled-releasing active ingredients , transporting these substances to the target region, and biologically degrading themselves, due to the hydrophilic and hydrophobic regions they contain.

Liposomes, mainly composed of phospholipids, have been used as model membranes by scientists for many years because of their similarity to the cell membrane in terms of structure and content, lack of their toxicity and their chemical content that can be adjusted by the researchers. Liposomes are one of the most studied topics in recent years. In this review, information on related with general characteristics, classification, preparation forms and application areas of liposomes are given.