In studies of oxidative stress in epididymal epididymal cells in goats, miR-542-3p mRNA can downregulate the expression of GPX5, thereby aggravating oxidative damage in epididymal epididymal cells (Yang et al., 2022)
The "minimal initial benefit" group (approximately 5-10% of users) reported limited improvements during treatment making discontinuation effects irrelevant, typically explained by inadequate product quality with degraded or low-concentration GHK-Cu, inappropriate application technique reducing absorption, unrealistic expectations exceeding what any topical can achieve, severe underlying pathology requiring medical intervention beyond cosmetic peptides, or individual non-responsiveness to copper peptide treatment for genetic or physiological reasons
You reconstitute it with bacteriostatic water, then inject subcutaneously
Topical Creams Reduced glutathione is also available in the form of topical creams and serums, which can be applied directly to the skin
Its less painful, plus SQ injection sites are more accessible
Cost: $50/shot weekly x 6-8 weeks