After cellulose, lignin is one of the most prevalent biopolymers naturally occurring on Earth. It is the universe’s primary source of aromatic chemicals. It is a complex macromolecule identified as phenolic material, and its structure varies greatly depending on the type of plant and the method by which it is isolated. The isolation is based on pretreatment as well as acid base methods. The isolation of lignin determines the quality and structural integrity for use. Although lignin has long been produced as a byproduct of the cellulose process in paper pulp, there are very few uses for it that offer an additional value. However, other applications of the lignin have come back into consideration as a result of changes in the paper business. It is valorized by gasification and pyrolysis as well as by combustion. Furthermore, the emergence of biorefinery initiatives aimed at producing biofuels, bio-based goods, and chemicals from carbohydrate polymers ought to yield copious amounts of the lignin with a potential for value addition. These developments have reignited curiosity about lignin and its potential application in polymer materials. Due to the absences of structural homogeneity and oxidative nature of basic phenol in the lignin, put some limitations to the use of lignin. However, the simple chemical modification of the lignin makes up to the useful molecule. It is noted that composite preparation using lignin offers a better way of utilization than the process and singular use of the lignin molecule, which provides structural integrity and strength to the composite material.