To gain complementary information on the formation of the internal water droplet in oil, we performed experiments at the scale of single drops. First, we used the rising drop method, in which a millimeter drop of 1-octanol is hold at the tip of a syringe, surrounded by water with PVA. Without PEG or other polymers in 1-octanol, the drop was always transparent. The setup also allowed us to measure the surface tension by analyzing the shape of the drop: we obtained a surface tension of 3mN/m, a value smaller than that of the pure octanol/water (7 mN/m) meaning that PVA significantly adsorb at the interface. When PEG or PVP was added in 1-octanol, the drop became dark within a few minutes (Figure ). Tiny objects were created at the interface, felt down into the oil drop due to gravity and accumulated at the bottom of the drop. Finally, the drop ended dark in transmission, due to the scattering of the created objects.