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Phase I Safety Profile: While topical and low-dose injectable formulations demonstrate high tolerance and minimal systemic toxicity, there is no formal Phase I safety data for chronic 85 mg/day intranasal delivery in humans
However, glutathiones long-term safety and efficacy are a part of ongoing research as scientific evidence stems from smaller clinical trials
Follow it with a glutathione serum like Glutone Serum to enhance skin texture and glow overnight
Where to buy medical-grade GHK-Cu for skin Many over-the-counter skincare brands now include copper peptides, but they often contain low concentrations or unstable formulations
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