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Unlike many peptides that have only injectable research data, GHK-Cu has been tested in published human clinical trials specifically as a topical application with outcomes that compared favorably against gold-standard actives
GHK-Cu has smaller, shorter cosmetic study evidence at 4 to 12 weeks
Limited human clinical trial data Most evidence is preclinical and observational
Topical vs Injectable GHK-Cu: What Beginners Should Know Topical GHK-Cu: Beginner-friendly
Before acting on best time to take ghk-cu, keep personal dosing changes with a licensed prescriber rather than a generic chart
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