Melatonin is a hormone produced by the pineal gland in the brain. It has been shown to help people fall asleep and improve sleep quality. Some people use melatonin supplements to tan faster, because it helps the body produce more melanin (the pigment that causes skin color). But there isn't enough research yet to say for sure how effective melatonin is for tanning. Melatonin is a hormone that helps regulate sleep andwake cycles. It is produced by the pineal gland in the brain and isresponsible for the induction of sleep.    Visit https://www.trutan.net/how-to-use-melanotan-2/