Your skin makes this molecule.
Then it stops.
BLU° puts it back.
GHK-Cu — Copper Tripeptide-1 — is a naturally occurring peptide complex that coordinates your skin's repair response. At age 20, plasma concentration averages 200 ng/mL. By 60, it falls to 80 ng/mL. First isolated in 1973, it has since accumulated 50+ peer-reviewed studies on barrier repair, collagen synthesis, and skin renewal. BLU° is built around one goal: restoring what time removes, at the concentration science demands.
Six functions. One molecule.
Activates collagen and elastin synthesis in dermal fibroblasts. Clinical studies show measurable improvement in skin density and depth after consistent use.
Binds to copper ions that regulate skin structural proteins. Tightens loose extracellular matrix architecture at the dermal level — not the surface.
Signals the skin's own wound-healing cascade — without injury. GHK-Cu mimics the body's native repair trigger, documented across 50+ peer-reviewed publications.
Reduces inflammatory markers including TNF-α and IL-1β. Anti-inflammatory action documented across multiple in vitro and in vivo studies.
Inhibits excess melanin production pathways. Even skin tone emerges from below — not from surface bleaching agents or abrasion.
Upregulates antioxidant enzyme expression including superoxide dismutase and catalase. Defence against UV-induced oxidative damage at the cellular level.
The research. Cited.
| Claim | Source |
|---|---|
| GHK-Cu stimulates collagen and elastin synthesis in human dermal fibroblasts. | Pickart, L. et al. FASEB Journal, 1989 |
| Topical copper tripeptide-1 at 0.1% improves skin laxity and fine line depth. | Finkley, M.B. et al. Journal of Cosmetic Dermatology, 2007 |
| GHK-Cu activates skin repair gene expression and accelerates wound closure. | Pickart, L. & Margolina, A. Biomolecules, 2018 |
| Anti-inflammatory action demonstrated via inhibition of TNF-α and IL-1β signalling. | Buffoni, F. et al. Archives of Dermatological Research, 1999 |
| Copper tripeptide supports barrier recovery and transepidermal water loss reduction. | Leyden, J.J. & Rawlings, A.V. Skin Moisturization, 2002 |
| GHK-Cu upregulates superoxide dismutase and catalase antioxidant enzyme expression.* | Sorenson, J.R. et al. Metal-Based Drugs, 1999 |
| GHK-Cu inhibits excess melanin biosynthesis and improves skin tone uniformity.* | Hosoki, A. et al. Skin Research and Technology, 2009 |
| Lyocell sheet fibre delivers superior moisture retention and skin-contact compliance vs. cotton.* | Swicofil AG Technical Fibre Properties Review, 2018 |
Our GHK-Cu is manufactured under pharmaceutical-grade conditions, tested to 99%+ purity at every production run via a 16-point Certificate of Analysis, and fully traceable from synthesis to mask. We don't source an active and assume. We verify it — batch by batch.
If it's BLU° — it's GHK-Cu.
Every BLU° mask is formulated to a single standard: deliver GHK-Cu at the concentration the science shows works. No fillers elevated as actives. No trace doses dressed in marketing language. Just one molecule — fifty years of science — at the dose that matters.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary.