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Subcutaneous (SC) : Common sites include the upper arm, thigh, or abdomen
Understanding which combinations make mechanistic sense and which should be avoided is important for safe and effective protocols
How it works GHK-Cu changes which repair instructions skin cells follow, increasing collagen, elastin, and antioxidant production while helping clear damaged tissue
Studies have explored how this compound interacts with copper-dependent enzymes including lysyl oxidase, which plays a critical role in collagen and elastin crosslinking
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