When l-carnitine was first identified in humans in 1952, it was thought to be a vitamin and it was referred to as vitamin BT
Unapproved, compounded versions dont have any of that oversight
It has been the subject of published research into melanocortin receptor pharmacology, particularly at the MC1R (melanogenesis-associated) and MC4R receptors
10.1016/j.heliyon.2024.e27635 95 ShamsabadiS.NazerY.GhasemiJ.MahzoonE.Baradaran RahimiV.AjiboyeB
However, safety concerns with hydroquinone led to withdrawal of the Kligman formula in several countries [6, 27, 74, 77, 90]
Each brand of thread lift is composed of different ingredients, is best suited to certain scenarios, and has its own list of pros and cons