**6. Conclusion**

Corrosion is a destructive phenomenon that could strike badly at the heart of an economy as it did on many occasions. The direct and indirect global costs associated with corrosion are no longer ignorable. Corrosion is not a necessary curse because it might be almost impossible to stop it but preventable. The use of inhibitors to mitigate corrosion is an economically viable option given the maintenance costs associated with the metals and equipment is already very high. However, recent trends in the field of corrosion inhibition are more inclined towards finding not only an effective inhibitor but also an eco-friendly one. This is because an effective inhibitor may serve the purpose of mitigating corrosion well but could leave hazardous impact on the health and ecology due to the harmful aspect associated with its chemical formula. Green corrosion inhibitors in the form of plant extracts, drugs, amino acids, rare earth metal compounds, ionic liquids, surfactants, etc. are not only eco-friendly but also provide excellent corrosion prevention. The replacement of the existing harmful organic and inorganic inhibitors that are used for different industrial applications by the green ones is not merely a matter of concern anymore but an agenda that has been in implementation and will continue to be realized.
