Why Is My Skin Starting To Sag? 3 Common Causes + What To Do

“Melatonin is critically important for your skin and plays a significant role in skin repair from environmental exposure, UV light, stressors, pollution, and so on,” says board-certified dermatologist Keira Barr, M.D., on an episode of Clean Beauty School. “If you’re not resting, you’re not generating that melatonin, and your skin isn’t repairing itself.”