Peptides are chains of amino acids, which are the building blocks of proteins.
When you apply peptides to the skin, they act as messengers to skin cells and tell them to build collagen and elastin. While the body produces collagen naturally, its production slows down with age and can cause the skin to look wrinkled, dull, and uneven. The skin needs proteins such as collagen and elastin to help keep it looking youthful and firm.