Melatonin is a hormone your body produces that helps with the timing of your circadian rhythms (your body’s internal clock). This means melatonin tells your body when to wake up and when to go to sleep. This is why melatonin is often called the “sleep hormone,” but studies show its benefits stretch beyond sleep, playing a critical role in skin and hair health.
Melatonin stimulates your body’s production of antioxidant enzymes, which in turn make antioxidants. Antioxidants neutralize the effects of UV and blue light exposure, pollution, and stress that you can see in your skin and hair, as well as those you can’t see.