However, growing evidences in the last two decades suggest that GPx2 and GPx4 may also influence the cellular radiosensitivity in an organ-specific manner (Table 2) [54,55,56, 67]
10.1053/j.gastro.2005.11.046 Gastroenterology 112 RaspiniB.ProsperiM.GuiducciL.SantocchiE.TancrediR.CalderoniS.et al (2021)
It protects skin from early ageing and new pigmentation
It's a liquid supplement, so there's nothing to cause physical discomfort
Why frequency is individualized Because response depends on individual metabolism, the underlying reason for use, and adherence, the cadence of injections is a clinical decision
Published evidence is narrower: topical skin and wound studies exist, hair claims are more indirect, and FDA materials caution that injectable GHK-Cu has limited human safety data [2], [3], [8]