Glycine, a simple amino acid, has emerged as a significant additive in the concrete industry due to its ability to influence the hydration processes of Portland cement. Utilized primarily as a retarder or an accelerator depending on its concentration and the specific conditions of the concrete mix, glycine can modify the setting time and early strength development of concrete. This versatility makes it particularly useful in varying climatic conditions and for specialized applications where control over the setting time is crucial. In severe environmental conditions, the ability to tailor the hydration kinetics of cement using glycine can lead to more durable and resilient concrete structures, capable of withstanding the challenges posed by extreme temperatures, moisture, and chemical exposure.