How does Hudros Melanin Correcting Facial Serum Works? The Hudros Melanin Correcting Facial Serum targets the skin's excessive melanin synthesis, which results in hyperpigmentation and dark patches. These serums have potent chemicals that work to control melanin synthesis, lighten existing dark spots, and stop the development of new ones. GFOUK Melanin Correcting Facial Serum contain active ingredients that help to lighten hyperpigmentation by reducing the production of melanin in the skin, breaking up existing melanin clusters, and promoting the growth of new, healthy skin cells. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.