To test the effects of lipid compositions on accretion kinetics, we employed five widely different types of lipids, each with a distinct headgroup chemistry, so as to follow distinct self-assembly processes (Figure ). The lipids include two single-charge lipids (SDS, negative and DDA, positive), two zwitterionic lipids (DPC, positive-negative and DAS, negative-positive) and a neutral lipid (LAU). All lipids are reported to spontaneously aggregate to form micelles at equilibrium, except for LAU that mainly assembles into vesicles in a pure state . All five lipids possess an identical hydrocarbon tailgroup of twelve carbons, allowing to focus solely on the effects attributed to headgroup chemistries.