Tetrapeptide

A tetrapeptide is a short peptide made of four amino acids linked together by peptide bonds. Because of its small size, it can still play an important role in biological processes, especially when the amino-acid sequence gives it a specific shape and function. Tetrapeptides are found in nature and are also studied in research, medicine, and skincare for their potential benefits. Some may support cell signaling, tissue repair, or antioxidant activity, while others are designed for targeted scientific applications. Their simple structure makes them useful in labs, but their effects can be highly specific depending on the amino acids involved.