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Description
How should I compare GHK-Cu Topical Serum with alternatives

B-Complex: Works to maintain muscle tone and healthy function of nerves, skin, eyes, hair, liver and mouth
Scientific Reports 12:484

Sublingual Drops: These go straight into the blood, possibly making them more effective

Gavi S, Qurashi S, Stuart LM, Lau R, Melendez MM, Mynarcik DC, McNurlan MA, Gelato MC
