Collagen peptides and the related synthetic peptides: A review on improving skin health

With the emergence of social aging problem, people's demand for active ingredients for skin health protection and therapeutic efficacy increases. Bioactive peptides are the optimal substances for skin anti-aging with its great diversity of biological activities and high security, such as antioxidation, anti-aging, anti-diabetes, antihypertension, and antibacterial. In recent years, natural and synthetic anti-aging peptides have been extensively studied in vitro, in vivo and clinically. Anti-aging peptides, such as collagen peptides, can affect various physiological pathways of skin, and have significant skin protection effect when applied locally and eaten. These characteristics show that bioactive peptides can improve skin health by providing specific physiological functions. In this review, we summarized the research of anti-aging peptides and the finishing of anti-aging peptides on improving skin health which is mainly based on the collagen peptides and the related synthetic peptides.