In this article, we report a novel micellar method to prepare ZnS nanostructures. UV-Visible absorption spectroscopy was employed extensively to study these ZnS nanostructures. A detailed investigation on optical properties of this nanomaterial was performed to determine alteration in absorption energies with the ultimate goal to decipher the role of various parameters involved in the synthesis process. We elucidate the qualitative effects of reactant concentration and reaction temperature on the formation of ZnS nanostructures. Based on this systematic investigation, we have made an attempt to ascertain favourable conditions for optimal production of ZnS nanostructures through the micellar route.