ghk-cu copper peptide hair growth clinical study human ghk cu topical studies ghk-cu hair Cu supports hair growth by improving blood flow to the follicle GHK-Cu Scalp Solution Advanced Copper Peptide Hair Regrowth

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Yes- it says one month

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The immediate post-discontinuation period (days 1-14) typically shows minimal visible changes as existing improvements from recent GHK-Cu application persist through maintained dermal copper levels, ongoing collagen synthesis from recently stimulated fibroblasts, and continued anti-inflammatory effects from treatment-induced changes

It is the regenerative signalling of copper peptides surfacing underlying skin issues and temporarily disrupting the barrier during adjustment