Discovered 1973 · Rediscovered by You

The molecule
you were born with.

Lost with age.
Restored by BLU°

GHK-Cu — Copper Tripeptide-1. At age 20, your skin carries 200 ng/mL in plasma. By 60, that falls to 80. BLU° delivers the molecule back — at 0.1% concentration, in a premium Lyocell sheet mask.

Shop the Mask The Science
GHK-Cu Copper Tripeptide-10.1% Active ConcentrationParaben Free · Silicone Free · Dye FreePremium Lyocell SheetCeramide NP · Centella Asiatica99%+ Purity · 16-Point COABarrier Repair · Collagen Support · Skin RenewalBiodegradable · Sensitive Skin Approved
The Collection

Choose your ritual.

All products
Best Seller
4-Mask
Collection
GHK-Cu Copper Peptide Repair Mask
$36.99
$9.25 / mask
  • 4 × premium Lyocell sheet masks
  • 25ml serum per mask
  • 0.1% Copper Tripeptide-1 active
  • Paraben & silicone free

A quiet ritual.
Twenty minutes of stillness. You deserve it.

The sheet is engineered to hold contact with skin for the full diffusion window. Fifteen to twenty minutes is not a suggestion — it is the time the copper tripeptide needs to cross the stratum corneum and begin its work in the layers beneath.

Model wearing the BLU° GHK-Cu mask
01 The Ritual
Kinetics of Contact

The molecule works from the inside.

GHK-Cu does not sit on the surface. Worn against the skin for at least 15–20 minutes, the Lyocell sheet forms an occlusive seal — hydrating the upper layers, softening the barrier, and letting the copper peptide travel past it.

0 min 5 10 15–20
0–5min
Conformance
Sheet settles against skin. Surface hydration begins; pores relax under occlusion.
Surface
5–12min
Diffusion
Copper tripeptide carried through the stratum corneum. Tight junctions soften with trapped moisture.
Barrier
12–20min
Activation
GHK-Cu reaches the living epidermis and upper dermis. Collagen and elastin synthesis signalled from within.
Dermal
GHK-Cu copper peptide molecule in glass sphere
What's Inside

Key Ingredients

The molecule you're born with — and lose with age.

Hero Peptide
Copper Tripeptide-1 (GHK-Cu)
0.1%
The cosmetic-effective concentration — backed by the research, not megadosed. Supports collagen synthesis, barrier repair, and skin renewal.
Stimulates collagen I & III production
Activates skin's natural repair cascade
50+ peer-reviewed studies since 1973
Ceramide NP golden serum
Ceramide NP
Barrier Shield
Strengthens the skin barrier. Locks in moisture and protects against environmental stress.
Lipid-identical barrier repair
Lasting moisture retention
Centella Asiatica leaf in petri dish
Centella Asiatica
Botanical Healer
Calms and soothes. A centuries-old botanical that visibly reduces redness and comforts stressed skin.
Rich in madecassoside
Visibly calms redness
Panthenol B5 clear serum
Panthenol (B5)
Deep Hydration
Deep, lasting hydration. Draws water into the skin and helps hold it there.
Pro-vitamin conversion
Attracts and holds water
1973
Year of Discovery
Isolated from human plasma by Dr. Loren Pickart. GHK-Cu levels drop by more than half between age 20 and 60 — taking your skin's repair signal with them.
0.1 %
Clinically Meaningful Dose
The concentration used in peer-reviewed studies on barrier repair, collagen synthesis, and skin renewal. Not a trace. Not a marketing number. The real dose.
99 %+
Purity Verified by COA
Every batch of GHK-Cu in BLU° is tested to 99%+ purity via a 16-point Certificate of Analysis. Traceable to source.
50 +
Peer-Reviewed Studies
GHK-Cu is one of the most studied tripeptides in regenerative dermatology. The science isn't new — it's been building since 1973.
Stay in the science

New research. New protocols.
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