Peptides are amino acids that make up the proteins in the skin. The way that peptides function in skin care products is by boosting your skin's natural communication system which slows over time due in part to free-radical damage. The decline in accurate and consistent communication that comes with age results in decreased collagen production, which contributes to wrinkles, loose and sagging skin, and dull and uneven skin tone. The peptides in your skin care regimen assist in helping to reverse this damage, repairing problem areas and preventing more communication issues from occurring. In this way, peptides decrease uneven texture, reduce wrinkles and fine lines and improve the overall appearance of the complexion.