Polymers, in their grafted and derivatized forms, are frequently used in medical research due to their unique properties as diagnostic, targeted, sustained, and regulated carriers. The method of iota carrageenan nanogel has been developed in this invention. The method is based on solubility, which was first investigated using the solvent screening technique. The de-solvating agent was then used to reduce the particle size and produce the gel in nano form, moreover, the viscosity and other physical properties were evaluated. Furthermore, it was compared to the basic gel, which was formed by adding polymer to hot water without any additional procedures, as opposed to the nano gel. The nanogel has an advantage over the regular gel due to its increased stability, fluorescence activity, and other favorable qualities. The special benefit of nanogel was discovered to be that it is an effective spreader material due to its low gel point and viscosity. The breakthrough technique that depends just on temperature and desolation without the need for crosslinking compounds will be more ecologically friendly and advantageous to polymer scientists, particularly in the domain of medical science.