In our previous studies [8], we found that there is synergism inthe micelle formation for CTAB and TX-100 mixture. This syner-gism was confirmed by the negative values of the intermolecularinteraction parameter in the mixed TX-100 and CTAB micelles and the calculations based on the theory of Blankschtein et al. [9–11].It was also found that the values of the standard free energy ofmicellization for the mixture of TX-100 and CTAB are somewhatlower than those for the individual components and they can bepredicted on the basis of Maeda equation [12], mole fraction ofthe surfactant and free enthalpy of TX-100 and CTAB mixing in themicelle. It appeared that the micelle formation is connected withthe changes of the surfactant volume during the micellization pro-cess. The volume of both the individual surfactants and the mixturestudied decreases during the micelization process. However, at theconcentration of the surfactant mixture higher than their CMC, anincrease of this volume is observed. It seems that the systems ofthe two-surfactant mixture in the presence of a short-chain alcoholare the most crucial from the practical point of view. Such systemsare quite complicated and that is why it is difficult to find in theliterature the information concerning them.