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Cosmetic copper peptide brands advertise concentration because they can't prescribe a dose
The GHK-Cu peptide in the GLOW stack directly addresses this by signaling your skin to create more collagen and elastin
While toxicity is rare, excessive intake of certain B vitamins (particularly B or B) from multiple sources could increase the risk of side effects (like niacin flush or peripheral neuropathy)
Those are not interchangeable for timing, protocol interpretation, or research design
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