Polymers are substances that degrade under the effects of natural elements such as heat, light, or air. The polymer on exposure to excess heat or light gets deteriorated and shows degradation in the form of reduced embrittlement and ductility, color change, and cracking. This affects the mechanical properties as well as the physical appearance of the polymer. Stabilizers are the group of additives that are mixed with polymers to adjust the processing or utility properties of the polymer at the processing stage, during storage, or during the product use. These additives counteract the degradation effects caused by radiation, environmental deterioration, and oxidation. Stabilizers are added to polymers in very small proportions, in general, at most by 1%-2% of weight. To counter the effects of polymer degradation, different stabilizers such as heat, light, antioxidant, antiozonant, and microbial stabilizer are used. The concentration of stabilizers used in different polymer blends varies as per the demand in the end-use industry.