glutathione direct film [Esther Formula] 5x Incorporate them for a healthier Glutathione Melting Film - 0.4g

In September 2023, the FDA added injectable GHK-Cu to a list of compounded substances considered high-risk due to limited safety data

The Cosmetic Ingredient Review (CIR) Expert Panel evaluated it (along with 22 other acryloyldimethyltaurate polymers) and concluded it's: Due to its large molecular size, it sits on the surface of skin rather than penetrating it

Reduced GSH levels following exhaustive exercise have been measured in red blood cells and muscle tissue, and the speed of glutathione repletion is a factor in recovery timeline and muscle function restoration

And its really appreciable especially when, like me, you try to use more powerful but also potentially more irritating anti-aging actives, like retinoids