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The GHK-Cu dosage chart provides injection dosing reference, while the concentration guide helps with topical formulation selection

In animal studies, GHK-Cu delivered under the skin or into the body cavity produced faster wound closure, more collagen, and better healing in the trickiest cases, like diabetic and ischemic wounds where normal repair usually lags. Why do researchers bother with injections

Look for HPLC purity testing and mass spectrometry confirmation of the correct molecular weight

Use appropriate scavengers in your cleavage cocktail to prevent unwanted side reactions

just wanted to know what needle size I should be using