Sets

<p>Save up to 19% with Cupra's complete GHK-Cu copper peptide skincare systems — curated bundles designed to work together from day one. Each kit delivers the full Daily Protocol, so your skin receives consistent GHK-Cu signal morning and night, without having to piece together a routine yourself.</p><p>Backed by 50+ years of independent research. Formulated with no fillers, no fragrance, and nothing your skin doesn't need.</p>

Save 15% on the Trio · Free Shipping on $80+ · Fragrance-Free Formulas
Common Questions

Everything you need to know

  • Start with the GHK-Cu Trio — it's the complete daily protocol: The Stick for targeted zones, The Signal serum for full-face GHK-Cu, and The Cream to exfoliate and seal. Three products, three minutes, and it covers everything you need to run the Koppā routine correctly.
  • The GHK-Cu Trio saves you 15% compared to buying each product separately, and it's curated so you have exactly what you need to run the Koppā routine correctly — nothing missing, nothing redundant.
  • Most people notice improved skin texture and hydration within the first 2–3 weeks. Measurable structural changes — collagen density, firmness, fine line reduction — typically show at 8–12 weeks of consistent daily use.
  • Yes — every bundle is available on a subscribe-and-save plan for an additional 15% off. You can pause, skip, or cancel at any time.