Melatonin is a hormone produced by the pineal gland. Melatonin is highly conserved and is a non-receptor free radical scavenger and a broad-spectrum antioxidant. Melatonin helps prevent ischemia-reperfusion damage to the liver, brain, heart muscle, intestines, and kidneys. Melatonin can be widely used in health food, medicine, all kinds of cosmetics, nourishing and nursing products. Function: 1. Melatonin freckle, natural whitening: melatonin can make the skin white. It can regulate human endocrine, remove pigmentation caused by dark spots, age spots, melasma, pregnancy spots and sun Chemicalbook radiation, whitening and moisturizing skin, and restore youthful appearance. 2. Effectively improve sleep: Appropriate supplementation of melatonin can effectively improve sleep quality. 3. Prolonging life: melatonin is the most important high-efficiency endogenous antioxidant in the brain, which has a protective effect on the brain, so melatonin is an important anti-aging hormone. Maintain and enhance sexual function: supplementing melatonin can improve sexual function of middle-aged and elderly people who are aging and have decreased energy, which leads to decreased sexual desire.