Simple: Accessible ingredients, straightforward prep, nothing that requires a technique you don't already have
Incumbents will defend with brand trust, real-world outcomes, rebate economics, patient programs, and next-gen pipelines, while entrants counter with cost leadership, domestic-first capture, and localized fill-finish to blunt rules-of-origin
Sinee Weschawalit, Siriwan Thongthip, Phanupong Phutrakool, and Pravit Asawanonda - Glutathione and its antiaging and antimelanogenic effects - Clin Cosmet Investig Dermatol - 2017
Copper and vitamin C are vital for iron transport, and a lack of either of these essential nutrients can inhibit iron absorption and contribute to pale lips