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Editor Review: "I love retinols because they've really helped brighten my skin and lighten my hyperpigmentation over the years, but they can dry my skin out a lot
However, the summary near the top of the page describes a broader company standard of at least 98.5%
Some clinicians use injectable GHK-Cu for advanced anti-aging protocols or in combination with other peptides, but this veers into clinical territory
Also, customer service responds fast and is very helpful
Frhlich H, Kollmeyer ML, Linz VC, Stuhlinger M, Groneberg D, Reigl A, Zizer E, Friebe A, Niesler B, Rappold G
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