Peptides Are Everywhere—These Anti-Aging Finds Are on Sale From Prime Day

They’re also ideal for those with sensitive skin, since the skin tends to tolerate them better than other anti-aging actives, like retinol, for example. 
“If your skin barrier has been compromised from over-exfoliation or harsh treatments, copper peptides can help support the skin’s natural repair process while promoting a healthier, more resilient complexion,” he said.