Synthetic epinephrine turns into melanin when exposed to light/air? What?
Epinephrine is oxidized to adrenochrome. Independent of source.
https://www.researchgate.net/figure/Melanin-biosynthesis-from-epinephrine-and-norepinephrine-Both-epinephrine-and_fig4_309329589
The original research was by Hoffer (not Hoffman).