Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and longer lasting than my eye colour change between 2008 and 2021 until my 20s, my eyes were completely brown : r mildlyinteresting Eye Color Change FLAAK Pro EyeTravelTurkey Do Lash Serums Change Your Eye Color? Dr Rupa How Keratopigmentation Permanently Changes Your Eye Color Allure How Long Does It Take For Melanotan To Work?