Soluplus®, a graft copolymer, has garnered significant interest in recent decades due to its potential for developing polymeric micelles that enhance the solubility of drugs that are otherwise poorly soluble in water. This study explores the effects of polymer dilution and the presence of salts on the characteristics of these micelles, including their size, morphology, and drug solubilization efficiency, using ibuprofen as a model drug. The phase behavior was studied using the cloud point (CP) experiment. The impact of dilution and salt on micellar size and morphology was examined using scattering techniques such as dynamic light scattering (DLS) and small-angle neutron scattering (SANS). Fourier Transform Infrared Spectroscopy (FTIR) was utilized to analyze the interactions between the drug and copolymer by identifying characteristic functional groups and potential shifts in their absorption peaks. Additionally, we measured surface properties, including dynamic surface tension (DST) and compression isotherms. DST measurements provided insights into the adsorption dynamics at the interface, while compression isotherms revealed packing and structural changes within the surfactant monolayer. High-Performance Liquid Chromatography (HPLC) was used to assess ibuprofen solubility across various polymer-diluted systems, both with and without salt, and the stability of the drug-loaded Soluplus® micelles was also checked for storage for up to two weeks. The results indicate that salt induces micellar growth by enhancing hydrophobic interactions. Moreover, the micelles remained stable against dilution for extended periods. The presence of salt also improved drug encapsulation and solubilization efficiency, resulting in larger, more hydrophobic micelles optimized for drug delivery. The findings from this study can significantly aid in designing formulations with the desired drug-loading capacity by adjusting the concentrations of the polymer and the salt. Moreover, it enhances the understanding of the behavior of micellar carriers under physiological conditions.