Skin clarity, repair, and tone — from the inside out.
A 12-week dermal renewal arc built around GHK-Cu, a copper-binding tripeptide naturally found in human plasma. Clear targets collagen synthesis, dermal density, and barrier integrity for visible improvements in skin tone, fine lines, and post-inflammatory pigmentation.

Glycyl-L-histidyl-L-lysine bound to copper(II). Naturally present in plasma, saliva, and urine, with concentrations declining sharply after age 30.
Modulates over 4,000 human genes, upregulating collagen, decorin, and elastin synthesis while downregulating inflammatory cytokines. Stimulates fibroblast activity and supports antioxidant defense via SOD induction.
Loading phase. Subcutaneous administration, baseline labs.
Maintenance dosing. Provider check-in at week 6.
Taper and reassessment. Dermal imaging compared to baseline.
Aggregated from Protokol partner-clinic submissions. Individual results vary.
Every Protokol arc starts with a partner clinician — bloodwork, supervision, and follow-up included.
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