What are Peptides? What to Know About the Collagen-Boosting Ingredient


We hear the word over and over again, but what are peptides? And do we want them in our skin-care products? According to basically every skin-expert on the planet, the answer is a resounding yes. Here’s why.

What are peptides in skin care?

New York dermatologist Julie Russak, MD puts it simply. “Peptides are a powerful skin-care ingredient that firms the skin and promotes collagen and elastin formation.” Celebrity aesthetician Biba de Sousa adds that peptides are “matrikines” that influence or command the cells of the body in some way. “Different types of peptides influence different types of cells,” she adds. “The peptides used in skin care communicate with and direct the skin cells to behave in a certain way, such as producing more collagen, or inhibiting certain chemicals that cause excess pigment or wrinkles, for example.”