I've heard of Melanotan. I even considered using it while living in South East Asia, not to become "black" but to radiation-harden my skin for living in bright sunshine. Today I live in Portland area and have no need for radiation hardening (at least for solar radiation). Also Melanotan blocks production of Vitamin D.
You can get Melanotan here:https://lovemelanotan.org/Melanotan
Of course the couple in question are nuts.
You can get Melanotan here:https://lovemelanotan.org/Melanotan
Of course the couple in question are nuts.