In a randomized, double-blind trial where women applied GHK-Cu encapsulated in a nano-lipid carrier twice daily for 8 weeks, the treatment group saw significant improvements in wrinkle depth and volume with no serious adverse events
The main concern is stacked GI side effects - both compounds slow digestion through different pathways, so combining them can amplify nausea, vomiting, and constipation
While not every user becomes deficient, the risk is substantial enough to warrant proactive supplementation, particularly during aggressive weight loss phases
doi:10.1046/j.1432-1327.2000.01595.x Study: Oxidative stress in the brain contributes to cognitive decline, mitigated by glutathione
Daily application of the serum between treatments enhances cumulative improvements
Known for its antioxidant power and melanin-regulating ability, glutathione works at a cellular level to address pigmentation from within, helping to reduce dark patches, even out skin tone, and promote a healthier-looking complexion over time