Lipopeptide surfactants are highly effective at reducing interfacial tension. However, there is a general lack of understanding of the relationship between their molecular architecture, interfacial activity and interfacial layer structure. Although lipopeptides are very abundant in nature, it is difficult to purify them due to a high extent of mixing. In this work, we will take advantage of modern synthetic chemistry to make highly pure samples and study how molecular structures affect interfacial structures in a systematic manner. This experiment aims at studying solution aggregation using the acyl chain deuterated samples we have recently made. SANS measurements will be made using both deuterated and hydrogenated lipopeptides.