As we all know the word ‘hyper’ means more, therefore the word Hyperpigmentation associates with more of skin pigments that is Melanin which gives natural color to skin and hair and eyes as well. But there is a concern related with this melanin it just cannot control it production by any means whenever it comes in exposure to sun light. Well this is not only the cause of excessive production of melanin. Due to certain medications and internal bodily dysfunctions can also trigger the productivity of melanin. https://www.vlccinstitute.com/blog/hyperpigmentation