This proposal is part of a funded (CASE) project, aimed at understanding the delivery of benefit actives (perfumes) to interfaces and the development of new self-assembled structures for more optimal interfacial delivery and retention. We have made good progress on a number of different fronts and specifically on the surface adsorption of phenyl ethanol, PE, and linalool, LL, with the anionic surfactant LAS in monolayer and multilayer surface structures. Some very recent preliminary measurements on surface retention / delivery illustrate the potential to probe the surface kinetics associated with the perfumes. We request here beam time on SURF / INTER to explore the impact of different surface structures on perfume delivery and retention.