US$ 26.66
skin whitening glutathione before and after How I brightened my with 1 Product & faded dark spots in 28 Days The Science Behind Glutathione Skin
Description
Research has studied GHK-Cu for its effects on hair follicle health, including stimulating hair follicle enlargement, supporting follicle vascularity, and promoting hair growth signaling
Concentration-wise, most serums land in the 1-2% range

doi: 10.1155/2017/4754701

the dose is sometimes written as 600 IU (International Units)