Peptides are short chains of amino acids, which are the building blocks of proteins. When amino acids link together in a specific sequence, they form peptides, and when these chains become longer, they are classified as proteins. Peptides play a variety of important roles in the body, acting as hormones, enzymes, and signaling molecules. They can influence many biological functions, including metabolism, immune response, and muscle growth.

In recent years, peptides have gained popularity in the health and fitness industry and in skincare products due to their potential benefits. However, it is important to note that peptides are still in the research phase and are currently sold for research purposes only.