does ghk cu get rid of blackheads PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r/SkincareAddiction 5 GHK Cu Peptide Injection

Formulation-chemistry literature notes that the chelated copper bond can be disrupted by low pH conditions associated with certain vitamin C forms and AHA/BHA exfoliants

Applying AHK-CU before bed means the peptide is present when your follicles are most active in their regeneration processes

A new alternative method for testing skin irritation using a human skin model: A pilot study

While it is true that the existing research exploring this peptides benefits are few and more studies on human subjects are required, the present data and user reviews are sufficient to establish its efficacy and potency

This suggests that excessive GHK-Cu (or other copper peptides) might theoretically push skin MMP-1 concentrations beyond levels supporting healthy collagen production into ranges associated with collagen fragmentation and breakdown seen in older skin with naturally elevated MMP-1