Concrete deterioration can be attributed to various extreme environmental factors such as carbonation, reinforcement corrosion, sulfate and chloride attack, freeze–thaw cycles, temperature fluctuations, erosive conditions, and the aging of the concrete itself. Repairing damaged concrete structures is crucial, as reconstruction can lead to significant social, economic, and environmental consequences. Polymer composites are among the most effective materials for retrofitting, offering enhanced strength, binding properties, and resistance to chemical exposure and freeze–thaw cycles. Latex and epoxy are commonly used polymers for concrete repair; epoxy enhances workability and mechanical properties, but it has drawbacks, such as being highly flammable and having low thermal resistance. On the other hand, latex can weaken concrete's mechanical properties, requiring special treatment to maintain structural integrity. To address the limitations of these polymers, new materials are needed. Glycoluril has been found to improve concrete hardening, while formaldehyde serves as an effective high-range water reducer. The potential benefits of combining Glycoluril and Formaldehyde (GF) in concrete need further exploration, specifically regarding their bond characteristics and overall impact on concrete performance. This review explores Glycoluril-Formaldehyde as an alternative polymer material and its potential role in concrete modification.