glutathione intramuscular or subcutaneous Compounded Glutathione Injection | Empower

Cyanocobalamin is the man-made version of B-12

They're both likely to be good for dry skin and brightening skin

Yao F, Peng J, Zhang E, Ji D, Gao Z, Tang Y, et al

Chen L, Chen K, Lavery LA, et al

GHK CU BEST FOR:Helps smooth fine lines GHK-Cu cream supports early collagen renewal to visibly soften the look of fine lines and wrinkles, leaving skin smoother and more refined.Firms skin & reduces the appearance of sagging Helps improve elasticity and firmness by supporting elastin production, making skin appear more lifted and resilient.Deep hydration & moisture barrier support Reinforces the skins natural moisture barrier and helps lock in long-lasting hydration

Cell Res 16(8):68192