GHK Cu Dosage Calculator and Chart A Z Guide What is the recommended dosage of GHK Cu (Glycyl Histidyl Lysine Copper) for topical treatment of acne and skin health on the face? Comment "Link" for product, Not gonna lie I used to ignore skincare completely , Meanwhile stress, pollution & lack of sleep were making my skin look super dull , Thats when I started using Glutathione is hands down one of my favorite supplements I've used and honestly without the sublingual version from @ryzewellness I wouldn't be able to tolerate the PIP and I would never