Finally, the robustness of the double-like emulsion was also evaluated upon addition of negatively charged surfactant, sodium dodecyl sulfate (SDS, 5% in water, 50 µL in 1 mL double-like emulsion. SDS is expected to interact with CTAB used to stabilize the oil-inwater droplets. This negatively charged surfactant induced destabilization of the double-like emulsion, forming Dex-rich droplets having a larger size (figure and), which could also coalesce with time. This behavior resembles that observed previously when adding CM-Dex.