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      learn GHK-Cu

      • GHK-Cu: Does it have side effects or is it completely safe? For topical cosmetic use, a cell study found GHK-Cu non-irritating, but no clinical trial has characterised its side effects on the scalp. Injected or oral GHK-Cu has no published human safety data, and the FDA lists injectable GHK-Cu among compounding substances that may present significant safety risks.

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      cosmetic product that temporarily makes hair appear thicker

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