GHK-Cu is a naturally-occurring copper peptide — a tripeptide bound to a copper ion. It's the most clinically-studied skin signal peptide in the world. Published research shows it supports skin firmness, hydration, and the appearance of fine lines. It's the active backbone of every INVIRA product.
Our formulations are fragrance-free, dye-free, and avoid common irritants like ethanol, sulfates, and synthetic preservatives. Most sensitive-skin users tolerate copper peptides well. If you're concerned, patch test on your forearm for 48 hours first.
Most users report skin feels softer and more hydrated within 7 days. Visible improvements in fine lines and overall radiance typically appear at the 4-6 week mark with daily use.
Cleanse with the Cleansing Mousse, sweep on the Toner, press in the Serum, then seal everything with the Wrinkle Cream. Use the Face Mask 1-3× a week and the Body Lotion daily.
No — the Serum is the hero and works on its own. The Toner and Wrinkle Cream complete the core ritual, while the Cleansing Mousse, Face Mask, and Body Lotion extend it. Start with the core three and build from there.
Room temperature is fine, but keep them out of direct sunlight and humidity (so: not on the bathroom shelf during a hot shower). For maximum shelf life, the copper peptide serums can be refrigerated.
All sales are final — because these are personal-care products, we don't accept returns or offer refunds for change of mind. If your order arrives damaged or defective, contact us within 14 days and we'll send a replacement at no cost. See our Returns page for details.
Orders placed before 2 PM EST ship the same business day via USPS Priority Mail. Most US orders arrive in 2-3 business days.
