does melanotan 2 darken hair Dangerous' tanning products promoted by influencers Darkening Facial Hair with MT2:

The amino acids lysine and methionine are converted into L-Carnitine in the body by the liver and kidneys

According to the IUCN RedList, the mangrove snake is classified as Least Concern

The nuance is that the body synthesizes carnitine and most people have adequate baseline carnitine levels from dietary intake (primarily from red meat) the supplemental benefit is most pronounced in vegetarians and vegans (who have significantly lower dietary carnitine intake), older adults (whose carnitine synthesis declines with age), athletes in high-volume training (who deplete carnitine more rapidly), and anyone in a caloric deficit where fatty acid oxidation demand is elevated relative to carnitine availability.

Women were more affected, with a female-to-male ratio of 2.5:1

Circulation 129(6):643659