Peptide research is a rapidly growing field, focusing on designing and developing short chains of amino acids for applications in medicine ,cosmetics, and nutrition, leveraging their high specificity and safety, with recent advances in AI-driven design, synthesis, and delivery tech enhancing their efficacy and stability as drugs, vaccines, and diagnostics.Key challenges, like poor cell penetration and enzyme instability, are being overcome through structural modifications, leading to more targeted and powerful peptide-based therapies for diverse conditions.