The Nanoprecipitation method is also known as solvent displacement method. In this method, the suspension of desired polymer is carried out in a suitable solvent to form polymeric solution after which the hydrophobic Curcumin is added into it. This solvent is then allowed to evaporate by hot air flow. This step can be better explained, as the addition of an organic phase containing hydrophobic Curcumin compound and polymers is added to an aqueous phase under magnetic stirring, after which the solvent diffuses into the aqueous phase. This leads to the controlled polymer precipitation which results the formation of polymeric shell encapsulating an oil core. The remaining organic solvent is then removed by evaporating the organic solvent which in turn stabilizes the curcumin nanoparticles which are shown to have a defined size of 160 nm. This process uses straightforward processes, making it favourable for laboratory scale and industrial application. The technique is compatible with various polymers enhancing the bioavailability and precipitation process ensures uniform polymeric shell, thus protecting the bioactive compound from environmental degradation. However, large scale production can be challenging as complete removal of organic solvent is critical and hence it is difficult to avoid toxicity . Schematic diagram for preparation of curcumin nanoparticle by Nanoprecipitation Method is shown in figure .