The science
Blue for a reason
GHK-Cu (copper tripeptide-1) is a naturally occurring copper-peptide complex, studied for skin remodeling, repair signaling and antioxidant activity. The copper is also why the serum is pale blue: no dye, no tint. If it isn't blue, it isn't copper peptide.
The formula
What's in the bottle, and why
Here's what published research says about each molecule in the formula, and, just as honestly, what it doesn't. These studies describe the ingredients, not the finished product.
The blue, on the bottle
-
The hero · the blue
GHK-Cu (copper tripeptide-1)
First isolated in 1973 by Dr. Loren Pickart, GHK-Cu has an extensive published research record, with 60+ studies on its role in skin repair signaling, resilience, and the visible quality of maturing skin. The blue color of the serum comes from the copper itself.
-
Tone & barrier
Niacinamide
A form of vitamin B3 with decades of published research on supporting the skin barrier, evening visible tone, and improving the look of texture, one of the most evidence-backed actives in all of skincare.
-
Brightening, made compatible
Stabilized vitamin C derivative
Classic L-ascorbic acid degrades quickly next to copper, which is why the old rule says never layer them. Derivative forms are studied specifically for their stability, letting brightening support coexist with GHK-Cu in one formula.
-
Weightless hydration
Hyaluronic acid
A humectant the skin makes naturally, studied extensively for drawing and holding moisture at the surface: the immediate plumping, smoothing effect you feel on application.
-
The delivery system
Silicone delivery base
A proprietary silicone system that forms a breathable, semi-occlusive veil: it slows water loss, spreads the actives in one even layer, and leaves the weightless primer finish. A touch of bisabolol keeps it calm on skin that runs reactive.
The delivery system
Why silicone is the point
Most of the category markets itself silicone-free, and most peptide serums feel like it: sticky gels, watery drops, pilling under SPF. Peptide Potion's base is a deliberate choice, not a filler.
The veil is breathable, not suffocating: it slows water loss while skin breathes, spreads four actives in one even pass, and finishes like a primer. Independent safety reviews consistently find cosmetic silicones safe as used.