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The Science Behind GHK-Cu and Skin Tightening The skin-tightening effects of GHK-Cu stem from its documented ability to stimulate production of the structural proteins that maintain skin firmness while simultaneously inhibiting their breakdown
Reduced Appearance of Fine Lines By supporting collagen and elastin production, GHK-Cu may help minimize the appearance of fine lines and wrinkles over time
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The clinical evidence for MK-677 is unusually strong for a compound in this category
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