Hyperpigmentation is a symptom of a heightened immune system. A tan is an example of pigmentation forming to protect the cells DNA and so hyperpigmentation tells us your body is under stress in some way. This can come from a hormonal imbalance or an inflammatory condition.
Sometimes Hyperpigmentation can mean a protein deficiency but more often than not it is a hormone imbalance. These products will help but getting to the root cause is essential. Melasma is something I suffered from for a long time