Melatonin for Antioxidant Support

Research suggests that melatonin may offer meaningful antioxidant and skin-protective properties, with a 2018 review drawing on approximately two decades of published literature concluding that topically applied melatonin can reduce markers of oxidative stress, help protect against UV-induced damage, and may improve visible signs of skin aging. The evidence base relevant to this specific application currently consists of a single review article rather than randomized controlled trials, which limits the strength of conclusions that can be drawn. A separate 2025 study examining monoamine signaling in primitive organisms touches on related biochemical pathways but does not directly address melatonin's antioxidant applications in humans, and is best understood as basic evolutionary science rather than clinical evidence. Overall, while the available research is directionally supportive, the limited number and types of studies mean that more rigorous clinical trials would be needed to draw firm conclusions about melatonin's effectiveness for antioxidant support.