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Everything you need to know

• Which bundle should I start with? +
  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.
• What's the difference between the Trio and buying individually? +
  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.
• How long before I see results? +
  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.
• Can I subscribe and save more? +
  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.