If you suffer from pigmentation disorder, the melanin production should be something to familiarize yourself with. 

Melanin is a pigment that is responsible for the different skin colours around the world. Genetics is responsible for the type of skin colour that will be inherited. However, hyperpigmentation happens when there is an overproduction of melanin, resulting in "spots" on the skin AKA pigmentation as we know it. There are several factors as to why pigmentation disorders occur, UV exposure, hormonal imbalance, acne scarring and ageing. Thankfully, this can be reversed with the correct care and treatments.