To construct a viable dye-based microlaser, it is necessary to achieve very high dye concentrations in a solid matrix. Increased aqueous solubility of the laser dye Rhodamine 6G has been demonstrated in liquid and gel phases, using the triblock copolymer P123 as a surfactant. An increased monomer concentration and the suppression of aggregation of the dye molecules were observed using spectral absorption and fluorescence measurements. The micellation of P123 was studied using differential scanning calorimetry. The optical and thermal data suggest that this micellation process leads to a partitioning of Rhadamine 6G in solution and ultimately drives the equilibrium toward monomer retention. Results from a linear partitioning model support this hypothesis and are in qualitative agreement with the experimental data. These findings pave the way for higher concentrations of Rhodamine 6G to be used in aqueous-based dye lasers and also indicate how Rhodamine 6G could be used in solid-state microlaser systems.