Melatonin can slow down the aging process and improve sleep. Melatonin is a spontaneously secreted amine in the human body that acts to relieve melanin deposition. Melatonin can act as an antioxidant, affects cell renewal metabolism, has an effect on the fat and protein content of cells, can play a role in delaying aging, and is important for maintaining the elasticity and integrity of the skin surface. Melatonin can act on the pituitary gland to reduce the time to sleep and wake up, reduce the time to fall asleep, help sleep and improve sleep quality. Melatonin can regulate the immune system, which is important for maintaining the immunity of the body. If you take melatonin in excess for a long time, it can easily cause endocrine disorders and even insomnia, so you need to take it according to your doctor’s prescription.